User Configuration > Administrative Templates > Microsoft Office 2016 > Miscellaneous
User
HKCU\software\policies\microsoft\office\16.0\common\internet
This policy setting allows you to hide Microsoft cloud-based file locations in the Backstage view in Office. This helps prevent users from opening, saving, or sharing cloud-based files to locations such as: OneDrive, SharePoint, or Third Party Services. This policy setting only applies to Word, PowerPoint, and Excel. To filter specific services, add the values for all services to be disabled: 1 - OneDrive Personal 4 - ThisPC 8 - SharePoint OnPrem 16 - Recent Places 32 - SharePoint 64 - OneDrive for Business 128 - Third Party Services Special Values: 0 - (Default) All services enabled. 2 - (Legacy Value) Disable SharePoint and OneDrive for Business. 4294967295 - All optional services disabled. For example, OneDrive Personal (1), This PC (4) and Third Party Services (128) can all be disabled with a value of 133. This value is calculated as follows: 1 + 4 + 128 = 133 Common Setting Values: 1 - Disable OneDrive Personal 2 - Disable SharePoint Online and OneDrive for Business 3 - Disable SharePoint Online, OneDrive for Business, and OneDrive Personal If you disable or don’t configure this policy setting, users can use any configured Microsoft cloud-based file location to open, save, and share files.