Sharepoint Problems after October 2025 and SD WAN Configuration

Hi,

we have FG200F with new OS and SD WAN Rule for our Sharepoint sites. This worked fine until maybe last year october when we got the first users with saving problems, access problems, etc. Users are not allowed to use OneDrive, they download Word files from our xxx.sharepoint.com and work with OFC.

Since we know that MS made some changes we are looking for internet access problems with the FG200F. First we created a SD WAN rule with destination Micrsosoft all services using ourt best internet access interface A. Also we deleted all UTM features on the policy but we still have problems. I checked and all sessions to the sharepoint sites use interface A.

I am not so sure, that we get a solution on the FG and that it more a client problem but any ideas what else we can try?

Thanks!