Classic Outlook with Google Sync has suddenly stopped working (as of June 2)

Anonymous
2025-06-03T11:17:51+00:00

As of yesterday, GSMO which I've been using (mostly) without issue for 8 years has stopped working. Outlook continually freezes and installing/uninstalling both apps is not working. I have a very mature work process within Outlook and using Gmail alone will not be able to match it. I have done some trash/old message clean up in Gmail to no avail. Anyone have any suggestions? Desperate here!

Outlook | Windows | Classic Outlook for Windows | For business

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Anonymous
2025-06-03T21:16:18+00:00

Had the exact same issue. Started today too (June 3rd 2025). Just before it started, when I opened outlook it wanted to do a authentication verification. It opened a chrome tab and I confirmed the login and rights. Right after that - within 5 seconds of opening outlook, outlook windows all close (silent crash) with no errors shown. I have a secondary outlook profile to an M365 mailbox that does not use google workplace sync and that profile still works normally.

I set my laptop to airplane mode, opened my normal outlook profile with GSMO. With airplane mode on, I could access the Google Workspace Sync icon on the taskbar, Turn Sync Modules on/off - deselect Google Contacts.

Turned airplane mode off again, Close and reopen outlook and email sync is fixed.

Looks pretty definite that google has a bug to fix here. Just gotta remember to recheck "Google Contacts" after their next update.

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  1. Anonymous
    2025-06-22T16:15:53+00:00

    Thanks for the additional information. I have Google Workspace on two computers - one, I just disabled the contacts module and left it at version 73. It has updated automatically to version 77. I have reenabled the contacts module and all is working fine. The other, I had gone back to version 68. I have checked and it is still version 68. Apparently, need to "manually update" per the comment above. Is the only way to do that is to uninstall GSWMSO and reinstall?

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