Prevent Microsoft Office from showing a warning when opening a Project file from Sharepoint
Solution 1:
This solved the problem:
- Run Internet Options > Security tab
- Click Trusted sites
- Click Sites
- Enter the SharePoint URL for the project folder
(such as
https://contoso.sharepoint.com
and if necessary use wildcards) - Click Add
- Slide down the Security level to "Low"
- Click OK.