a. Check File name:
· Remove any unsupported characters ( \ , / , : , * , ? , " , < , > , | , # , %)
· Rename the file
b. Stop and Restart Syncing library:
· To stop syncing a library select the One Drive for Business icon at the bottom of your screen right-click and then select Stop syncing a folder
· Select the folder you want to stop syncing, and then select Stop syncing
· When you stop syncing a folder, the folder is disconnected from its library and go to actual SharePoint folder on your pc and delete the folder
· To start syncing a library select the OneDrive for Business icon at the bottom of your screen right-click and then select Sync a new library
· Select Sync a different library instead
· Enter your SharePoint site (e.ge. https://contoso.sharepoint.com)
· Select the library from the list and click Sync
· Waiting to sync all your files (see green light)