Issue Solve: Sandboxed Code Host Service was too busy to handle the request in sharepoint

!ssue1:  "Sandboxed Code Host Service was too busy to handle the request".

Whenever you see the message

Please do 8 steps like here to solve the issue

1. get SID value of SPManagedAccount

2. Open Registry from Command line

3. Click on plus icon from S-1-5-21-1214440339-725345543-691511546-8518, the SID that we got from step 1

4. Continue expand Software -> Microsoft

5. Expand Windows -> CurrentVersion -> WinTrust -> Trust Providers -> Software Publishing

6. Change value of State from 23c00 to 23e00

7. Stop and Start again the SharePoint Foundation Sandboxed Code Service

8. Now the Sandboxed WebPart run well


Hope this helps, Thanks :)