We recently deployed GroupWise 2014 R2 and everything went smoothly. However we noted that the file %appdata%\Microsoft\Excel\excel15.xlb disappears after 5 seconds when the GroupWise client is opened.

I can replicate to problem by creating an empty "excel15.xlb" file and opening GroupWise, the file is erased after about 5 seconds.

How can I stop this from happening?

Thank you!