Update error code 30088-27 Office 2021 what to do to get corrected????

Briefly for information.

Version 2408 16.0.17928.20066 is available on the release channel and the manuel update worked well so far now (at least for me). Release notes are following...

You can also update Office by using the following well known command line:

"C:\Program Files\Common Files\microsoft shared\ClickToRun\officec2rclient.exe" /update user updatetoversion=16.0.17928.20066

Still working fine here after the update from within Office.

Hi Uwe Ruch,

Thanks for the heads up on the new build. I updated (manually via command line) but, unfortunately, the result is the same (30088-27 error).

Briefly for information.

Version 2408 16.0.17928.20066 is available on the release channel and the manuel update worked well so far now (at least for me). Release notes are following...

You can also update Office by using the following well known command line:

"C:\Program Files\Common Files\microsoft shared\ClickToRun\officec2rclient.exe" /update user updatetoversion=16.0.17928.20066

Finally, it's working!

I activated "All connected experiences" and "Experiences that download online content" within Microsoft 365. I'm using O&O ShutUp10++ and disabled following options within the tool (it's a similar tool like DoNotSpy11):

After rebooting the system, I tried out if the error message was still there. It was and I restartet the system again. After that, the error message has been gone.

I also stated in Prious 04's topic that I do not want to enable this optional privacy setting because I do not want any MS Office documents or emails syncing with OneDrive (the image below shows OneDrive appears as a connected service when File | Office Account | Privacy Settings | Manage Settings | Connected Experiences | Turn On All Connected Experiences is ENABLED), so this workaround is not a viable solution for me.

Just for your information, that OneDrive notice also appears on all three of my machines, two of which have OneDrive disabled and the third which does not have it installed. Even on the few occasions that I have actually activated OneDrive, I disabled file syncing in its settings and I've never had anything transfer to it that I have not done manually (and even then, it doesn't sync when the file is changed). So you might be a little overcautious on this issue, though you do have to set things up properly.

No criticism, just offering it for the information. With Microsnot,, you are quite right to be a bit paranoid.