I've been getting this pop up too. After an extremely frustrating 2 hours on the phone with Microsoft - still no resolution, and then the call dropped! No callback or reply to my MS case email either....
Lots of other people are reporting problems in Microsoft forums: https://answers.microsoft.com/en-us/msoffice/forum/all/how-to-stop-the-use-office-connected-experiences/30fb3510-3572-4757-962c-5ce1720fc67e
If you look at what happens with connected experiences, it's a cyber security + privacy nightmare (Microsoft wants to analyze your data): https://answers.microsoft.com/en-us/msoffice/forum/all/how-to-stop-the-use-office-connected-experiences/30fb3510-3572-4757-962c-5ce1720fc67e
Connected experiences uses machine learning (your data is in a huge database somewhere)! https://learn.microsoft.com/en-gb/deployoffice/privacy/connected-experiences-content#connected-experiences-and-machine-learning
This supposedly is how to turn it off - but it does NOT work.
https://support.microsoft.com/en-au/office/connected-experiences-in-microsoft-365-8d2c04f7-6428-4e6e-ac58-5828d4da5b7c
And the instructions to turn it off only apply ONLY to Windows: go to File > Account > Manage Settings (In Outlook it's under Office Account) - there is no "File > Account > > Manage Settings" in the Mac apps!
While on the phone with Microsoft, we also tried to use the Microsoft_Office_License_Removal tool - as they thought it was something cached. No go - don't bother trying.
Office worked fine with version 16.75 - but the Pop Ups started with later updates. I've rolled back to 16.75 - but now have a yellow banner across my Word documents with nagware to update..... and I'm not on the latest version, which means there could be security holes patched in later versions. Really quite disgusted by this.
Microsoft refuses to accept that this a Mac software bug in Office 365 (Ventura) ! There is no option that allows you to select "download online content" such as Help without enabling "all connected experiences"
Beware - if you turn this on, then you are allowing Microsoft to analyse your data which may contain very personal info or sensitive client data. And keeping "Connected Services" off means no Help files are available to find functions ++++
I'm wondering if there's some preference file hidden away somewhere that can be deleted?
I'm sure lots of us would appreciate an Apple rep helping out here!