I have an ADP file created in 2003 hitting a SQL Server database and
working fine.When I open it in Access 2007 on a different machine,
same network, I go through the Office button/Server/Connection
sequence to establish the connection to the server and database. All
proceeds normally and the "Test connection" button confirms the
connection succeeded. However when I then go back to the project and,
for instance, open a form, I get the "Access was not able to perform
this operation because the project is not connected to a SQL Server
database" message. Re-opening the "Data Link Properties" dialog using
the above sequence shows everything
blanked out. The titlebar of the Access app shows "(disconnected)"
throughout the process. Anyone have any idea what's going on here? I'm
more than baffled. Thanks!

= M =

I suppose that you must have some sort of VBA code that is resetting the
connection string. What happens if you open a blank ADP project?

--
Sylvain Lafontaine, ing.
MVP - Technologies Virtual-PC
E-mail: sylvain aei ca (fill the blanks, no spam please)


<(E-Mail Removed)> wrote in message
news:9dc8816a-d359-4ed0-a83d-(E-Mail Removed)...
>I have an ADP file created in 2003 hitting a SQL Server database and
> working fine.When I open it in Access 2007 on a different machine,
> same network, I go through the Office button/Server/Connection
> sequence to establish the connection to the server and database. All
> proceeds normally and the "Test connection" button confirms the
> connection succeeded. However when I then go back to the project and,
> for instance, open a form, I get the "Access was not able to perform
> this operation because the project is not connected to a SQL Server
> database" message. Re-opening the "Data Link Properties" dialog using
> the above sequence shows everything
> blanked out. The titlebar of the Access app shows "(disconnected)"
> throughout the process. Anyone have any idea what's going on here? I'm
> more than baffled. Thanks!
>
> = M =

Thanks for the response. Setting up a blank ADP linking into the
server is no problem. It works just as expected. There's no VBA
involved in setting connections either -- I've done it all through
menus and just left it that way. What's interesting (if that's the
right word) is that the "Data Link Properties" is blank as soon as I
re-open it after setting, and testing, the connection. The title bar
also continues to say "disconnected" throughout. It's like the setting
never "takes". Ever heard of anything like that?

= M =


On Jul 25, 7:07*pm, "Sylvain Lafontaine" <sylvain aei ca (fill the
blanks, no spam please)> wrote:
> I suppose that you must have some sort of VBA code that is resetting the
> connection string. *What happens if you open a blank ADP project?
>
> --
> Sylvain Lafontaine, ing.
> MVP - Technologies Virtual-PC
> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
> <mdup...@hotmail.com> wrote in message
>
> news:9dc8816a-d359-4ed0-a83d-(E-Mail Removed)...
>
> >I have an ADP file created in 2003 hitting a SQL Server database and
> > working fine.When I open it in Access 2007 on a different machine,
> > same network, I go through the Office button/Server/Connection
> > sequence to establish the connection to the server and database. All
> > proceeds normally and the "Test connection" button confirms the
> > connection succeeded. However when I then go back to the project and,
> > for instance, open a form, I get the "Access was not able to perform
> > this operation because the project is not connected to a SQL Server
> > database" message. Re-opening the "Data Link Properties" dialog using
> > the above *sequence shows everything
> > blanked out. The titlebar of the Access app shows "(disconnected)"
> > throughout the process. Anyone have any idea what's going on here? I'm
> > more than baffled. Thanks!
>
> > = M =

Search for any call to ConnectionOpen or ConnectionClose (single words, no
point) in your code.

--
Sylvain Lafontaine, ing.
MVP - Technologies Virtual-PC
E-mail: sylvain aei ca (fill the blanks, no spam please)


<(E-Mail Removed)> wrote in message
news:f80c884a-333d-4f80-a1f5-(E-Mail Removed)...

Thanks for the response. Setting up a blank ADP linking into the
server is no problem. It works just as expected. There's no VBA
involved in setting connections either -- I've done it all through
menus and just left it that way. What's interesting (if that's the
right word) is that the "Data Link Properties" is blank as soon as I
re-open it after setting, and testing, the connection. The title bar
also continues to say "disconnected" throughout. It's like the setting
never "takes". Ever heard of anything like that?

= M =


On Jul 25, 7:07 pm, "Sylvain Lafontaine" <sylvain aei ca (fill the
blanks, no spam please)> wrote:
> I suppose that you must have some sort of VBA code that is resetting the
> connection string. What happens if you open a blank ADP project?
>
> --
> Sylvain Lafontaine, ing.
> MVP - Technologies Virtual-PC
> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
> <mdup...@hotmail.com> wrote in message
>
> news:9dc8816a-d359-4ed0-a83d-(E-Mail Removed)...
>
> >I have an ADP file created in 2003 hitting a SQL Server database and
> > working fine.When I open it in Access 2007 on a different machine,
> > same network, I go through the Office button/Server/Connection
> > sequence to establish the connection to the server and database. All
> > proceeds normally and the "Test connection" button confirms the
> > connection succeeded. However when I then go back to the project and,
> > for instance, open a form, I get the "Access was not able to perform
> > this operation because the project is not connected to a SQL Server
> > database" message. Re-opening the "Data Link Properties" dialog using
> > the above sequence shows everything
> > blanked out. The titlebar of the Access app shows "(disconnected)"
> > throughout the process. Anyone have any idea what's going on here? I'm
> > more than baffled. Thanks!
>
> > = M =

Sorry, it's OpenConnection and CloseConnection, not ConnectionOpen or
ConnectionClose.

--
Sylvain Lafontaine, ing.
MVP - Technologies Virtual-PC
E-mail: sylvain aei ca (fill the blanks, no spam please)


"Sylvain Lafontaine" <sylvain aei ca (fill the blanks, no spam please)>
wrote in message news:u16$(E-Mail Removed)...
> Search for any call to ConnectionOpen or ConnectionClose (single words, no
> point) in your code.
>
> --
> Sylvain Lafontaine, ing.
> MVP - Technologies Virtual-PC
> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
>
> <(E-Mail Removed)> wrote in message
> news:f80c884a-333d-4f80-a1f5-(E-Mail Removed)...
>
> Thanks for the response. Setting up a blank ADP linking into the
> server is no problem. It works just as expected. There's no VBA
> involved in setting connections either -- I've done it all through
> menus and just left it that way. What's interesting (if that's the
> right word) is that the "Data Link Properties" is blank as soon as I
> re-open it after setting, and testing, the connection. The title bar
> also continues to say "disconnected" throughout. It's like the setting
> never "takes". Ever heard of anything like that?
>
> = M =
>
>
> On Jul 25, 7:07 pm, "Sylvain Lafontaine" <sylvain aei ca (fill the
> blanks, no spam please)> wrote:
>> I suppose that you must have some sort of VBA code that is resetting the
>> connection string. What happens if you open a blank ADP project?
>>
>> --
>> Sylvain Lafontaine, ing.
>> MVP - Technologies Virtual-PC
>> E-mail: sylvain aei ca (fill the blanks, no spam please)
>>
>> <mdup...@hotmail.com> wrote in message
>>
>> news:9dc8816a-d359-4ed0-a83d-(E-Mail Removed)...
>>
>> >I have an ADP file created in 2003 hitting a SQL Server database and
>> > working fine.When I open it in Access 2007 on a different machine,
>> > same network, I go through the Office button/Server/Connection
>> > sequence to establish the connection to the server and database. All
>> > proceeds normally and the "Test connection" button confirms the
>> > connection succeeded. However when I then go back to the project and,
>> > for instance, open a form, I get the "Access was not able to perform
>> > this operation because the project is not connected to a SQL Server
>> > database" message. Re-opening the "Data Link Properties" dialog using
>> > the above sequence shows everything
>> > blanked out. The titlebar of the Access app shows "(disconnected)"
>> > throughout the process. Anyone have any idea what's going on here? I'm
>> > more than baffled. Thanks!
>>
>> > = M =
>
>

Have you solved the exact problem that haunts me too?

"Sylvain Lafontaine" wrote:

> Sorry, it's OpenConnection and CloseConnection, not ConnectionOpen or
> ConnectionClose.
>
> --
> Sylvain Lafontaine, ing.
> MVP - Technologies Virtual-PC
> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
>
> "Sylvain Lafontaine" <sylvain aei ca (fill the blanks, no spam please)>
> wrote in message news:u16$(E-Mail Removed)...
> > Search for any call to ConnectionOpen or ConnectionClose (single words, no
> > point) in your code.
> >
> > --
> > Sylvain Lafontaine, ing.
> > MVP - Technologies Virtual-PC
> > E-mail: sylvain aei ca (fill the blanks, no spam please)
> >
> >
> > <(E-Mail Removed)> wrote in message
> > news:f80c884a-333d-4f80-a1f5-(E-Mail Removed)...
> >
> > Thanks for the response. Setting up a blank ADP linking into the
> > server is no problem. It works just as expected. There's no VBA
> > involved in setting connections either -- I've done it all through
> > menus and just left it that way. What's interesting (if that's the
> > right word) is that the "Data Link Properties" is blank as soon as I
> > re-open it after setting, and testing, the connection. The title bar
> > also continues to say "disconnected" throughout. It's like the setting
> > never "takes". Ever heard of anything like that?
> >
> > = M =
> >
> >
> > On Jul 25, 7:07 pm, "Sylvain Lafontaine" <sylvain aei ca (fill the
> > blanks, no spam please)> wrote:
> >> I suppose that you must have some sort of VBA code that is resetting the
> >> connection string. What happens if you open a blank ADP project?
> >>
> >> --
> >> Sylvain Lafontaine, ing.
> >> MVP - Technologies Virtual-PC
> >> E-mail: sylvain aei ca (fill the blanks, no spam please)
> >>
> >> <mdup...@hotmail.com> wrote in message
> >>
> >> news:9dc8816a-d359-4ed0-a83d-(E-Mail Removed)...
> >>
> >> >I have an ADP file created in 2003 hitting a SQL Server database and
> >> > working fine.When I open it in Access 2007 on a different machine,
> >> > same network, I go through the Office button/Server/Connection
> >> > sequence to establish the connection to the server and database. All
> >> > proceeds normally and the "Test connection" button confirms the
> >> > connection succeeded. However when I then go back to the project and,
> >> > for instance, open a form, I get the "Access was not able to perform
> >> > this operation because the project is not connected to a SQL Server
> >> > database" message. Re-opening the "Data Link Properties" dialog using
> >> > the above sequence shows everything
> >> > blanked out. The titlebar of the Access app shows "(disconnected)"
> >> > throughout the process. Anyone have any idea what's going on here? I'm
> >> > more than baffled. Thanks!
> >>
> >> > = M =
> >
> >
>
>
>

> Have you solved the exact problem that haunts me too?

Huh?

--
Sylvain Lafontaine, ing.
MVP - Technologies Virtual-PC
E-mail: sylvain aei ca (fill the blanks, no spam please)


"xshen" <(E-Mail Removed)> wrote in message
news:8AD54798-0FC1-471D-885A-(E-Mail Removed)...
> Have you solved the exact problem that haunts me too?
>
> "Sylvain Lafontaine" wrote:
>
>> Sorry, it's OpenConnection and CloseConnection, not ConnectionOpen or
>> ConnectionClose.
>>
>> --
>> Sylvain Lafontaine, ing.
>> MVP - Technologies Virtual-PC
>> E-mail: sylvain aei ca (fill the blanks, no spam please)
>>
>>
>> "Sylvain Lafontaine" <sylvain aei ca (fill the blanks, no spam please)>
>> wrote in message news:u16$(E-Mail Removed)...
>> > Search for any call to ConnectionOpen or ConnectionClose (single words,
>> > no
>> > point) in your code.
>> >
>> > --
>> > Sylvain Lafontaine, ing.
>> > MVP - Technologies Virtual-PC
>> > E-mail: sylvain aei ca (fill the blanks, no spam please)
>> >
>> >
>> > <(E-Mail Removed)> wrote in message
>> > news:f80c884a-333d-4f80-a1f5-(E-Mail Removed)...
>> >
>> > Thanks for the response. Setting up a blank ADP linking into the
>> > server is no problem. It works just as expected. There's no VBA
>> > involved in setting connections either -- I've done it all through
>> > menus and just left it that way. What's interesting (if that's the
>> > right word) is that the "Data Link Properties" is blank as soon as I
>> > re-open it after setting, and testing, the connection. The title bar
>> > also continues to say "disconnected" throughout. It's like the setting
>> > never "takes". Ever heard of anything like that?
>> >
>> > = M =
>> >
>> >
>> > On Jul 25, 7:07 pm, "Sylvain Lafontaine" <sylvain aei ca (fill the
>> > blanks, no spam please)> wrote:
>> >> I suppose that you must have some sort of VBA code that is resetting
>> >> the
>> >> connection string. What happens if you open a blank ADP project?
>> >>
>> >> --
>> >> Sylvain Lafontaine, ing.
>> >> MVP - Technologies Virtual-PC
>> >> E-mail: sylvain aei ca (fill the blanks, no spam please)
>> >>
>> >> <mdup...@hotmail.com> wrote in message
>> >>
>> >> news:9dc8816a-d359-4ed0-a83d-(E-Mail Removed)...
>> >>
>> >> >I have an ADP file created in 2003 hitting a SQL Server database and
>> >> > working fine.When I open it in Access 2007 on a different machine,
>> >> > same network, I go through the Office button/Server/Connection
>> >> > sequence to establish the connection to the server and database. All
>> >> > proceeds normally and the "Test connection" button confirms the
>> >> > connection succeeded. However when I then go back to the project
>> >> > and,
>> >> > for instance, open a form, I get the "Access was not able to perform
>> >> > this operation because the project is not connected to a SQL Server
>> >> > database" message. Re-opening the "Data Link Properties" dialog
>> >> > using
>> >> > the above sequence shows everything
>> >> > blanked out. The titlebar of the Access app shows "(disconnected)"
>> >> > throughout the process. Anyone have any idea what's going on here?
>> >> > I'm
>> >> > more than baffled. Thanks!
>> >>
>> >> > = M =
>> >
>> >
>>
>>
>>

My problem is that the adp file can be opened on other computers without any
problems, but not open on one specific computer (when the adp file is open,
the title bar shows "disconnected"). When I check Server/Connection menu
item, it said "Access was not able to perform this operation because the
project is not connected to a SQL Server database" message.

I also tried to open Control panel/Administrative Tools/Data Sources (ODBC),
it said "ODBC installer DLL (odbccp32.dll) is not installed". When I tried to
install it, it said the package is already included in the Windows XP.

I don't know what the real problem is. Any idea? Thanks!



"Sylvain Lafontaine" wrote:

> > Have you solved the exact problem that haunts me too?
>
> Huh?
>
> --
> Sylvain Lafontaine, ing.
> MVP - Technologies Virtual-PC
> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
>
> "xshen" <(E-Mail Removed)> wrote in message
> news:8AD54798-0FC1-471D-885A-(E-Mail Removed)...
> > Have you solved the exact problem that haunts me too?
> >
> > "Sylvain Lafontaine" wrote:
> >
> >> Sorry, it's OpenConnection and CloseConnection, not ConnectionOpen or
> >> ConnectionClose.
> >>
> >> --
> >> Sylvain Lafontaine, ing.
> >> MVP - Technologies Virtual-PC
> >> E-mail: sylvain aei ca (fill the blanks, no spam please)
> >>
> >>
> >> "Sylvain Lafontaine" <sylvain aei ca (fill the blanks, no spam please)>
> >> wrote in message news:u16$(E-Mail Removed)...
> >> > Search for any call to ConnectionOpen or ConnectionClose (single words,
> >> > no
> >> > point) in your code.
> >> >
> >> > --
> >> > Sylvain Lafontaine, ing.
> >> > MVP - Technologies Virtual-PC
> >> > E-mail: sylvain aei ca (fill the blanks, no spam please)
> >> >
> >> >
> >> > <(E-Mail Removed)> wrote in message
> >> > news:f80c884a-333d-4f80-a1f5-(E-Mail Removed)...
> >> >
> >> > Thanks for the response. Setting up a blank ADP linking into the
> >> > server is no problem. It works just as expected. There's no VBA
> >> > involved in setting connections either -- I've done it all through
> >> > menus and just left it that way. What's interesting (if that's the
> >> > right word) is that the "Data Link Properties" is blank as soon as I
> >> > re-open it after setting, and testing, the connection. The title bar
> >> > also continues to say "disconnected" throughout. It's like the setting
> >> > never "takes". Ever heard of anything like that?
> >> >
> >> > = M =
> >> >
> >> >
> >> > On Jul 25, 7:07 pm, "Sylvain Lafontaine" <sylvain aei ca (fill the
> >> > blanks, no spam please)> wrote:
> >> >> I suppose that you must have some sort of VBA code that is resetting
> >> >> the
> >> >> connection string. What happens if you open a blank ADP project?
> >> >>
> >> >> --
> >> >> Sylvain Lafontaine, ing.
> >> >> MVP - Technologies Virtual-PC
> >> >> E-mail: sylvain aei ca (fill the blanks, no spam please)
> >> >>
> >> >> <mdup...@hotmail.com> wrote in message
> >> >>
> >> >> news:9dc8816a-d359-4ed0-a83d-(E-Mail Removed)...
> >> >>
> >> >> >I have an ADP file created in 2003 hitting a SQL Server database and
> >> >> > working fine.When I open it in Access 2007 on a different machine,
> >> >> > same network, I go through the Office button/Server/Connection
> >> >> > sequence to establish the connection to the server and database. All
> >> >> > proceeds normally and the "Test connection" button confirms the
> >> >> > connection succeeded. However when I then go back to the project
> >> >> > and,
> >> >> > for instance, open a form, I get the "Access was not able to perform
> >> >> > this operation because the project is not connected to a SQL Server
> >> >> > database" message. Re-opening the "Data Link Properties" dialog
> >> >> > using
> >> >> > the above sequence shows everything
> >> >> > blanked out. The titlebar of the Access app shows "(disconnected)"
> >> >> > throughout the process. Anyone have any idea what's going on here?
> >> >> > I'm
> >> >> > more than baffled. Thanks!
> >> >>
> >> >> > = M =
> >> >
> >> >
> >>
> >>
> >>
>
>
>

A variety of reasons could block the connection between this client's
machine and the server, the first one beeing the port 1433 (it's the default
port) beeing blocked by a firewall. A second possibility is that you are
using an Alias but forgot to set it up on this particular machine. There are
other possibilities as well.

In your case, checking the ODBC Data Sources is of no use because ADP use
OLEDB, not ODBC.

The first thing to do would be to check with a *blank* ADP project (to make
sure that you don't any startup code changing the connection) and test for
the possibility of a firewall. After that, you could try using either the
Named Pipes protocotol or TCP/IP by putting np: or tcp: before the name of
the server. For tcp:; you can also add ,1433 after the name of the server;
for example:

sqlcmd -S tcp:NameOfTheServer\sqlexpress,1433


If you are using dynamically allocated port on the sql-server, make any
necessary adjustement, including checking that the port 1434 (beside the
port 1433) is not blocked as well. The use of an alias for the name of the
server could also help you in solving your connection problem. Here are
some more references for helping you on this topic but I didn't check them
recently:

http://blogs.msdn.com/sql_protocols/...efused-it.aspx

http://blogs.msdn.com/sqlexpress/arc...05/415084.aspx

http://blogs.msdn.com/sqlexpress/arc...23/192044.aspx

http://msdn2.microsoft.com/en-us/library/ms345318.aspx

http://www.datamasker.com/SSE2005_NetworkCfg.htm

--
Sylvain Lafontaine, ing.
MVP - Technologies Virtual-PC
E-mail: sylvain aei ca (fill the blanks, no spam please)


"xshen" <(E-Mail Removed)> wrote in message
news:AF0D9997-5AC6-4BAD-9CEB-(E-Mail Removed)...
> My problem is that the adp file can be opened on other computers without
> any
> problems, but not open on one specific computer (when the adp file is
> open,
> the title bar shows "disconnected"). When I check Server/Connection menu
> item, it said "Access was not able to perform this operation because the
> project is not connected to a SQL Server database" message.
>
> I also tried to open Control panel/Administrative Tools/Data Sources
> (ODBC),
> it said "ODBC installer DLL (odbccp32.dll) is not installed". When I tried
> to
> install it, it said the package is already included in the Windows XP.
>
> I don't know what the real problem is. Any idea? Thanks!
>
>
>
> "Sylvain Lafontaine" wrote:
>
>> > Have you solved the exact problem that haunts me too?
>>
>> Huh?
>>
>> --
>> Sylvain Lafontaine, ing.
>> MVP - Technologies Virtual-PC
>> E-mail: sylvain aei ca (fill the blanks, no spam please)
>>
>>
>> "xshen" <(E-Mail Removed)> wrote in message
>> news:8AD54798-0FC1-471D-885A-(E-Mail Removed)...
>> > Have you solved the exact problem that haunts me too?
>> >
>> > "Sylvain Lafontaine" wrote:
>> >
>> >> Sorry, it's OpenConnection and CloseConnection, not ConnectionOpen or
>> >> ConnectionClose.
>> >>
>> >> --
>> >> Sylvain Lafontaine, ing.
>> >> MVP - Technologies Virtual-PC
>> >> E-mail: sylvain aei ca (fill the blanks, no spam please)
>> >>
>> >>
>> >> "Sylvain Lafontaine" <sylvain aei ca (fill the blanks, no spam
>> >> please)>
>> >> wrote in message news:u16$(E-Mail Removed)...
>> >> > Search for any call to ConnectionOpen or ConnectionClose (single
>> >> > words,
>> >> > no
>> >> > point) in your code.
>> >> >
>> >> > --
>> >> > Sylvain Lafontaine, ing.
>> >> > MVP - Technologies Virtual-PC
>> >> > E-mail: sylvain aei ca (fill the blanks, no spam please)
>> >> >
>> >> >
>> >> > <(E-Mail Removed)> wrote in message
>> >> > news:f80c884a-333d-4f80-a1f5-(E-Mail Removed)...
>> >> >
>> >> > Thanks for the response. Setting up a blank ADP linking into the
>> >> > server is no problem. It works just as expected. There's no VBA
>> >> > involved in setting connections either -- I've done it all through
>> >> > menus and just left it that way. What's interesting (if that's the
>> >> > right word) is that the "Data Link Properties" is blank as soon as I
>> >> > re-open it after setting, and testing, the connection. The title
>> >> > bar
>> >> > also continues to say "disconnected" throughout. It's like the
>> >> > setting
>> >> > never "takes". Ever heard of anything like that?
>> >> >
>> >> > = M =
>> >> >
>> >> >
>> >> > On Jul 25, 7:07 pm, "Sylvain Lafontaine" <sylvain aei ca (fill the
>> >> > blanks, no spam please)> wrote:
>> >> >> I suppose that you must have some sort of VBA code that is
>> >> >> resetting
>> >> >> the
>> >> >> connection string. What happens if you open a blank ADP project?
>> >> >>
>> >> >> --
>> >> >> Sylvain Lafontaine, ing.
>> >> >> MVP - Technologies Virtual-PC
>> >> >> E-mail: sylvain aei ca (fill the blanks, no spam please)
>> >> >>
>> >> >> <mdup...@hotmail.com> wrote in message
>> >> >>
>> >> >> news:9dc8816a-d359-4ed0-a83d-(E-Mail Removed)...
>> >> >>
>> >> >> >I have an ADP file created in 2003 hitting a SQL Server database
>> >> >> >and
>> >> >> > working fine.When I open it in Access 2007 on a different
>> >> >> > machine,
>> >> >> > same network, I go through the Office button/Server/Connection
>> >> >> > sequence to establish the connection to the server and database.
>> >> >> > All
>> >> >> > proceeds normally and the "Test connection" button confirms the
>> >> >> > connection succeeded. However when I then go back to the project
>> >> >> > and,
>> >> >> > for instance, open a form, I get the "Access was not able to
>> >> >> > perform
>> >> >> > this operation because the project is not connected to a SQL
>> >> >> > Server
>> >> >> > database" message. Re-opening the "Data Link Properties" dialog
>> >> >> > using
>> >> >> > the above sequence shows everything
>> >> >> > blanked out. The titlebar of the Access app shows
>> >> >> > "(disconnected)"
>> >> >> > throughout the process. Anyone have any idea what's going on
>> >> >> > here?
>> >> >> > I'm
>> >> >> > more than baffled. Thanks!
>> >> >>
>> >> >> > = M =
>> >> >
>> >> >
>> >>
>> >>
>> >>
>>
>>
>>

My apologies for the delay in responding to many of the ideas here.
I've been traveling and out of touch (in a lot of ways). Unfortunately
none of these ideas has made a difference and the problem remains. I'm
still unable to reliably establish a connection between and ADP file
even a new ADP file, and a named SQL Server. In reverse chronological
order:

Notes to Sylvain 15 Aug):
- Creating a new, blank ADP file results in the same behavior (the
connection wizard 'works' and 'Test Connection' successed but no
actual connection is made, or saved and Access shows "Disconnected" in
its title bar
- Adding the tcp: prefix for the server name, with out without the ",
1433" extension -- a trick I'd never heard of -- also failed in the
same way.
- The "np:" prefix failed with a "Data Link Error" (as I'd
expected, given the supported network protocols here).
- It doesn't seem to be a firewall or port connection. Other ADP
files running on the same machine connecting to the same SQL Server
box have no problem.

Notes xshen (26 July)
- Interesting variant of the problem. I get no complaints about
*.dll files, though, and again some ADP files on my machine work fine,
some don't.

Notes on Sylvain (26 July)
- Disabling all the VBA in the project makes no difference.

Any other ideas floating around out there??

= M =


On Aug 15, 9:22*am, "Sylvain Lafontaine" <sylvain aei ca (fill the
blanks, no spam please)> wrote:
> A variety of reasons could block the connection between this client's
> machine and the server, the first one beeing the port 1433 (it's the default
> port) beeing blocked by a firewall. *A second possibility is that you are
> using an Alias but forgot to set it up on this particular machine. There are
> other possibilities as well.
>
> In your case, checking the ODBC Data Sources is of no use because ADP use
> OLEDB, not ODBC.

> The first thing to do would be to check with a *blank* ADP project (to make
> sure that you don't any startup code changing the connection) and test for
> the possibility of a firewall. *After that, you could try using either the
> Named Pipes protocotol or TCP/IP by putting np: or tcp: before the name of
> the server. *For tcp:; you can also add ,1433 after the name of the server;
> for example:
>
> sqlcmd -S tcp:NameOfTheServer\sqlexpress,1433
>
> If you are using dynamically allocated port on the sql-server, make any
> necessary adjustement, including checking that the port 1434 (beside the
> port 1433) is not blocked as well. The use of an alias for the name of the
> server could also help you in solving your connection problem. *Here are
> some more references for helping you on this topic but I didn't check them
> recently:
>
> http://blogs.msdn.com/sql_protocols/...tcp-provider-n...
>
> http://blogs.msdn.com/sqlexpress/arc...05/415084.aspx
>
> http://blogs.msdn.com/sqlexpress/arc...23/192044.aspx
>
> http://msdn2.microsoft.com/en-us/library/ms345318.aspx
>
> http://www.datamasker.com/SSE2005_NetworkCfg.htm
>
> --
> Sylvain Lafontaine, ing.
> MVP - Technologies Virtual-PC
> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
> "xshen" <xs...@discussions.microsoft.com> wrote in message
>
> news:AF0D9997-5AC6-4BAD-9CEB-(E-Mail Removed)...
>
> > My problem is that the adp file can be opened on other computers without
> > any
> > problems, but not open on one specific computer (when the adp file is
> > open,
> > the title bar shows "disconnected"). *When I check Server/Connection menu
> > item, it said "Access was not able to perform this operation because the
> > project is not connected to a SQL Server database" message.
>
> > I also tried to open Control panel/Administrative Tools/Data Sources
> > (ODBC),
> > it said "ODBC installer DLL (odbccp32.dll) is not installed". When I tried
> > to
> > install it, it said the package is already included in the Windows XP.
>
> > I don't know what the real problem is. Any idea? Thanks!
>
> > "Sylvain Lafontaine" wrote:
>
> >> > Have you solved the exact problem that haunts me too?
>
> >> Huh?
>
> >> --
> >> Sylvain Lafontaine, ing.
> >> MVP - Technologies Virtual-PC
> >> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
> >> "xshen" <xs...@discussions.microsoft.com> wrote in message
> >>news:8AD54798-0FC1-471D-885A-(E-Mail Removed)...
> >> > Have you solved the exact problem that haunts me too?
>
> >> > "Sylvain Lafontaine" wrote:
>
> >> >> Sorry, it's OpenConnection and CloseConnection, not ConnectionOpen or
> >> >> ConnectionClose.
>
> >> >> --
> >> >> Sylvain Lafontaine, ing.
> >> >> MVP - Technologies Virtual-PC
> >> >> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
> >> >> "Sylvain Lafontaine" <sylvain aei ca (fill the blanks, no spam
> >> >> please)>
> >> >> wrote in messagenews:u16$(E-Mail Removed)...
> >> >> > Search for any call to ConnectionOpen or ConnectionClose (single
> >> >> > words,
> >> >> > no
> >> >> > point) in your code.
>
> >> >> > --
> >> >> > Sylvain Lafontaine, ing.
> >> >> > MVP - Technologies Virtual-PC
> >> >> > E-mail: sylvain aei ca (fill the blanks, no spam please)
>
> >> >> > <mdup...@hotmail.com> wrote in message
> >> >> >news:f80c884a-333d-4f80-a1f5-(E-Mail Removed)..com...
>
> >> >> > Thanks for the response. Setting up a blank ADP linking into the
> >> >> > server is no problem. It works just as expected. There's no VBA
> >> >> > involved in setting connections either -- I've done it all through
> >> >> > menus and just left it that way. What's interesting (if that's the
> >> >> > right word) is that the "Data Link Properties" is blank as soon as I
> >> >> > re-open it after setting, and testing, *the connection. The title
> >> >> > bar
> >> >> > also continues to say "disconnected" throughout. It's like the
> >> >> > setting
> >> >> > never "takes". Ever heard of anything like that?
>
> >> >> > = M =
>
> >> >> > On Jul 25, 7:07 pm, "Sylvain Lafontaine" <sylvain aei ca (fill the
> >> >> > blanks, no spam please)> wrote:
> >> >> >> I suppose that you must have some sort of VBA code that is
> >> >> >> resetting
> >> >> >> the
> >> >> >> connection string. What happens if you open a blank ADP project?
>
> >> >> >> --
> >> >> >> Sylvain Lafontaine, ing.
> >> >> >> MVP - Technologies Virtual-PC
> >> >> >> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
> >> >> >> <mdup...@hotmail.com> wrote in message
>
> >> >> >>news:9dc8816a-d359-4ed0-a83d-(E-Mail Removed)...
>
> >> >> >> >I have an ADP file created in 2003 hitting a SQL Server database
> >> >> >> >and
> >> >> >> > working fine.When I open it in Access 2007 on a different
> >> >> >> > machine,
> >> >> >> > same network, I go through the Office button/Server/Connection
> >> >> >> > sequence to establish the connection to the server and database.
> >> >> >> > All
> >> >> >> > proceeds normally and the "Test connection" button confirms the
> >> >> >> > connection succeeded. However when I then go back to the project
> >> >> >> > and,
> >> >> >> > for instance, open a form, I get the "Access was not able to
> >> >> >> > perform
> >> >> >> > this operation because the project is not connected to a SQL
> >> >> >> > Server
> >> >> >> > database" message. Re-opening the "Data Link Properties" dialog
> >> >> >> > using
> >> >> >> > the above sequence shows everything
> >> >> >> > blanked out. The titlebar of the Access app shows
> >> >> >> > "(disconnected)"
> >> >> >> > throughout the process. Anyone have any idea what's going on
> >> >> >> > here?
> >> >> >> > I'm
> >> >> >> > more than baffled. Thanks!
>
> >> >> >> > = M =