The "Allow Editing" setting is grayed out on the Share dialog for all files within a document library.
Can someone please help me enable this?
This setting can be checked under other document libraries.
Can Share settings be restricted per document library?
Solução
After having Office 365 support on the phone for 1.5 hours, they concluded that this setting is disabled for a document library when you enable "require check out" under Versioning Settings.