SharePoint Foundation 2010 - Unable to change Site Theme

Question

I'm having trouble changing the site theme in my SharePoint Foundation 2010 environment.

When I do Site Actions > Site Settings > Look and Feel > Site Theme, i receive:

Error: Access Denied

I currently have Full Control over the site.

When verifying the User Permissions in Central Administration, I can see that All Permissions are enabled (including "Apply themes and borders").

I can find nothing in my ULS logs concerning this.

There is not a single site where I can change the Site Theme.

Please advise.

---

After fiddling with the permissions I managed to reach the theme selection page on 1 subsite. But after selecting any theme for that site I receive the error:

Error Attempted to perform an unauthorized operation. Correlation ID: x

When I filter for the Correlation ID I see 3 messages:

• Name=Request (POST:http://URL/Site/TestSite1/_layouts/themeweb.aspx)
• Site=/
• Leaving Monitored Scope (Request (POST:http://URL/Site/TestSite1/_layouts/themeweb.aspx)). Execution Time=43.8902150971702

These messages aren't very useful.

All the other sites still give me the Acces Denied error.

Answer 1

Try setting yourself as Site Collection administrator and retry.

Answer 2

The solution to this problem was performing a Site Collection backup and restore to a new web application in a new content database. It turned out that the old Content Database belonged to the devil.