Hope this is the right group to ask this...   We are running SW 2017 with Workgroup PDM.  In the vault, normally you can right click a file, and select Document Information from the pop-up menu to see information on the file.  The VIEW tab is supposed to show a view of the file contents.  This works for us "sometimes", but other times it pops up an error message:

Selecting any of the options to open, save or cancel has no effect.  Once you receive this message, any and ALL files you try to view show like this:

SOMETIMES, you can quit and restart SW, and it will function like it is supposed to, other times this has no effect.  For this whole week, I have fallen into the latter.  Nothing I do seems to allow me to view files.  It used to work better, but I don't think anything has changed on my system.  It's very frustrating to have to  open/check out every file just to see it's contents.

Anyone know what this is about or how to correct this issue?

thanks in advance...