A Microsoft file hosting and synchronization service.
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Here it is again in case you didnt see it the first time:
When I try to unsync any folder, this error message appears:
"The folder you tried to unselect contains the windows documents folder, which is an important folder in windows and is currently pointed to Onedrive"
This is a new thing that started happening over the weekend, as I use OneDrive on a daily basis.
Rebuilding all the folders and subdirectories are not an option since they are time-consuming and there is not enough space on my local drive (which is why I am using OneDrive and turning folders on and off).
Microsoft, please sort this out.