> For the complete documentation index, see [llms.txt](https://docs.devolutions.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.devolutions.net/rdm/knowledge-base/troubleshooting-articles/requested-operation-cannot-be-completed.md).

# Requested operation cannot be completed

Fix the requested operation cannot be completed delegation error in Remote Desktop Manager Windows by setting the ProtectionPolicy registry value to 1.

Remote Desktop Manager Windows may freeze, display an error message, or crash unexpectedly. The following error appears:

"The requested operation cannot be completed. The computer must be trusted for delegation and the current user account must be configured to allow delegation".

### Solution

Modify the ***Registry Editor*** to allow the local backup of the Master key without requiring a Read-Write Domain Controller (RWDC). Follow these steps:

1. Open the ***Registry Editor*** and navigate to the following key:

   `HKEY_LOCAL_MACHINE\Software\Microsoft\Cryptography\Protect\Providers\df9d8cd0-1501-11d1-8c7a-00c04fc297eb`
2. Right-click on the key and create a new DWORD (32-bit) value named `ProtectionPolicy`.
3. Set the value of `ProtectionPolicy` to ***1***.

This change should resolve the issue immediately and does not require to restart Remote Desktop Manager.


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