[Solved] SharePoint Illegal operation attempted on a registry key that has been marked for deletion


Posted on : Thu, 3rd Sep 15 01:52 pm UTC
100+ votes

SharePoint users get an internal server error while performing search.
This error appears for Out Of The Box search site too.

If stack trace is enabled, the message will contain information "Illegal operation attempted on a registry key that has been marked for deletion".

Perform these steps on all SharePoint servers to fix this issue -

- Restart Search Query and Site Settings Service from Central Administration
- Restart the application pool for SecurityTokenService
- Reset IIS

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