There are many support tickets related to (mostly Windows) users having local project copy on a shared/network drive, be it SharePoint, OneDrive, Dropbox etc.

The point is that it interferes with our sync, that creates temp files and deletes them while OneDrive tries to read them, and then sync fails on that. I think the very first thing we need to do is to put temporary files to the system-wide temporary folder, that should in my opinion already fix most of the issues

https://lutraconsulting.slack.com/archives/CDGBLDTL6/p1750863533282459?thread_ts=1750863391.580239&cid=CDGBLDTL6

Fix:

• Use system-wise temporary folder for storing temp sync data instead of the hidden .mergin folder

C:\Users\<user>\OneDrive\Desktop\
D:\Dropbox\[Shared Folder] aaa\
C:\Users\<user>\Dropbox\Mein PC\