Anith Gopal

This may be somewhat obvious but took me a few minutes to figure out what had happened. I have been developing sandbox solutions on my development box for a project I’m working on and was at the point of uploading some of the WSP’s to the staging SharePoint 2010 farm. They uploaded just fine to the site collection and showed the "Activate" button highlighted upon selecting the solution.

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Activate disabled for SharePoint 2010 sandbox solution