When it opens just a little bit does it just show the splash screen (with
the Outlook logo), if so:
Try starting Outlook once with the /safe command line switch for example
from the Start > Run > type
"c:\Program Files\Microsoft Office\Office\Outlook.exe" /safe with the quotes
and the space before the forward slash.
Note your path to outlook.exe may be different.
If Outlook starts this way then the most common causes for the locking up
are:
1. Corrupt messages in your Inbox.
2. Corrupt or damaged Toolbar.
3. Damaged view.
4. Add-in causing the error.
Resolution
For No.1 remove the first or last message in your Inbox depending on how you
sort the Inbox.
If it is No 2 then renaming outcmd.dat (with Outlook closed) should clear
the toolbars,
search your hard drive for a file called outcmd.dat and rename it to
outcmd.old then start Outlook
(if this doesn't cure your problem then you can rename the file back to
outcmd.dat and regain any
customization of the Toolbars).
For No. 3 the running the /cleanviews command line switch will reset all
views to default for example from the
Start > Run > type "c:\Program Files\Microsoft Office\Office\Outlook.exe"
/cleanviews with the quotes and the space
before the forward slash. Note your path to outlook.exe may be different.
For No. 4 go to Tools > Options > Other > Advanced Options > Add-ins and
uncheck all the add-ins. Close and restart Outlook, then add the add-ins
one by one (closing and restarting Outlook each time) until you get to the
problematic add-in. Depending on the add-in you may be able to remove it
completely via Add/Remove Programs in Control Panel and then re-install a
fresh copy. If after a re-install you are still getting problems with the
add-in then uninstall it again close Outlook do a search for a file called
extend.dat and rename it to extend.old and repeat the installation of
the add-in.
