> 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 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. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.devolutions.net/rdm/knowledge-base/troubleshooting-articles/requested-operation-cannot-be-completed.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.