In Windows 11, you can set up automatic clearing of Remote Desktop connection records on startup by following these steps:

Open the Run dialog box. You can press the Win + R shortcut key to open the Run dialog box.

Type regedit and click OK to open the Registry Editor.

In the Registry Editor, navigate to the following path:

HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client

In the Terminal Server Client folder, right-click on a blank area and select New – DWORD (32-bit) Value to create a new DWORD entry.

Name the newly created DWORD entry fDenyTSConnections.

Right-click on the fDenyTSConnections entry and select Modify. Set the Value data to 1 and click OK.

Close the Registry Editor.

Now, each time you start your computer, Windows 11 will automatically clear the Remote Desktop connection records. Please note that this setting only clears Remote Desktop connection records established during the startup process and will not affect any currently established connections.