Recently, I noticed that the option to approve a request for access to a site was grayed out. I had full control over the site; so I knew it wasn’t a permissions issue with my account. The reason was that there was no group selected. Instead, the dropdown had “Select a group or permission level.” Once I selected a group, I was able to approve or decline the request.
Then a colleague and I encountered the “Failed to decline request” error. We both had full control over the site, but neither of us could decline a user’s request for access to the site.
Since selecting a group had fixed my approve problem, I decided to apply the same logic to this decline issue. Low and behold, after selecting a group, my colleague and I were able to decline the request.
After experiencing these two issues, I finally recognize the importance of having a default group.
To set the default group for a site:
1. Navigate to the site
2. From the Settings wheel, click Site settings
3. Under Users and Permissions, click People and Groups
4. Click the group that will be the default
5. Click Settings and select Make Default Group
6. Click OK to make the current group the default members group
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