How do I remove a file type association?

[Guest]

I have some files with a .1 extension that someone accidentally associated
with Notepad. If I try to use the file in the normal way now in my usual
application (a mainframe application after copying, etc), there are some
characters or something that are interfering with the file's normal usage.
Originally, the icon associated with these files was just a plain Windows
default icon; now, of course, it is the Notepad icon. I would like to
completely remove any file type association for all of these .1 files, but
when I try to go into My Computer, Tools, Folder Options, Fle types, I do not
see the .1 extension in the list to 'delete' the association. Can someone
help me?

 

[Frankster]

Go to a command line and type...

assoc .1= [hit enter]

That's it!

-Frank

 

[Frankster]

Note: you may have to reboot before the standard windows icon will show for
these files. Although, the actual functionality will be in affect
immediately.

-Frank

Go to a command line and type...

assoc .1= [hit enter]

That's it!

-Frank

I have some files with a .1 extension that someone accidentally associated
with Notepad. If I try to use the file in the normal way now in my usual
application (a mainframe application after copying, etc), there are some
characters or something that are interfering with the file's normal
usage.
Originally, the icon associated with these files was just a plain Windows
default icon; now, of course, it is the Notepad icon. I would like to
completely remove any file type association for all of these .1 files,
but
when I try to go into My Computer, Tools, Folder Options, Fle types, I do
not
see the .1 extension in the list to 'delete' the association. Can someone
help me?