Error “Upload pending: Server unavailable” or “Upload failed: Locked by another user” when saving files [FIXED]
Last updated: April 4, 2017
When creating large Office files—pre-saved documents with a size greater than 3.5MB—and saving them for the first time to OneDrive, OneDrive for Business or a SharePoint document library, you may receive an error message indicating upload and/or locking problems during save.
This issue impacts the following Office versions:
Office 365 Subscribers for Windows: 16.0.7870.2013 or greater Office 2016 one-time purchase for Windows: Version 1702 (Build 7870.2013) or greater Office for Windows Mobile: 17.7830.1009 or greater Office for Android: 16.0.7830.1002 or greater
This issue has been fixed in builds 16.0.7870.2031 or later, which are being automatically rolled out, but you can update manually to receive the fix right away.
Open any of the Office apps, then go to File > Account, (or Office Account in Outlook) > Update Options> Update Now.