Error:
When you first use VS2010 to deploy a sandboxed solution project (default project) , you may see this error:
Error 1 Error occurred in deployment step 'Activate Features': Cannot start service SPUserCodeV4 on computer '<Server Name>'.
0 0 MySharePointProject1
Resolution:
Go to Central Administration-->select System Settings-->select Manage services on server-->Find the 'Microsoft SharePoint Foundation Sandbox Code Service' and click Start.
Your solution will work now.
