Office upload center upload failed permission issue

Sometimes Office upload centre just stops working.

Sometimes with failed permission, sometimes with

“OneDrive for Business found a problem while accessing the Microsoft Office Document Cache and needs to repair it before it can continue.
As part of the repair a copy of the cache will be saved as a backup and a new cache will be created.”

See also: http://community.office365.com/en-us/f/172/t/238998.aspx on time 5/14/2014 10:58 PM

If required then:

1. Stop syncing
   http://office.microsoft.com/en-us/support/stop-syncing-a-library-with-skydrive-pro-HA102850041.aspx
2. Rename folder as backup in case you lose files
3. Stop related services in Task Manager Resources, including Groove, MSOSync or similar
4. Clear cache
   http://community.office365.com/en-us/f/148/t/161576.aspxBrowse to “C:\Users\username\AppData\Local\Microsoft\Office\Spw” and delete all the content. You will see that this is all related to groove, and spw equals SharePoint Workspace.Go to “C:\Users\username\AppData\Local\Microsoft\Office\15.0\OfficeFileCache” and also delete all content from this folder. This is where all the caching from your files are stored.
   Note : Just try to delete all, if one or two items cannot be deleted, that’s OK.
5. Sync again
   It may or may not allow you to choose a location

http://community.office365.com/en-us/f/148/t/215635.aspx