Windows 10: Error Copying Outlook PST files to Box.com Desktop Folder

Hello,I'm working with Win11 Pro.I am attempting to copy an Outlook PST file to my Box Desktop Sync Folder and I continue to receive the error that the file is either invalid, or the path is too long.I have run RegEdit and GPEdit.msc, enabling long paths in both cases. Therefore, I don't think the issue is the path/file length.This error occurs even after I reboot and NOT open the Outlook program before attempting to execute the copy.The PST file is only 115,089 KB, so I'm assuming that the file size is not too large either.Thoughts about what could be causing this restriction?Thanks for your

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Outlook PST File Problem

That is exactly what I was going to suggest. Export everything to another PST file, delete the old(or rather move it out of the default folder) and replace it with the new PST file that you exported.

 

Outlook PST File Problem

Thanks again everyone. I just did an export on the troubled PST file to create a new PST file from it and the file size went from 3.9GB down to 850MB. Then I installed the new PST file into Outlook that I just created and removed the old PST file from Outlook and all seems to be working fine so far. I think I am good now, but I will give it some time just to make sure there are no problems before I delete the old file. Thanks again.

 

Outlook PST File Problem

My Outlook PST file has now grown to nearly 4GB. I have deleted tons of stuff, emptied the deleted items mailbox, and I have done a Compact Now on the PST file a few times, but the file size never gets smaller. It just keeps growing in size instead. My guess is that it shouldn't even be 1GB at this point. Is there some easy thing I can do to rebuild the file using just the emails, contacts, and folders I want to keep so that the file runs smoothly and is optimized down to its proper size? Cheers. Marc