1. On the RDS session host, launch Registry Editor (regedit) as an administrator.
2. In regedit, browse to **HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod**.
3. Within this registry key is a REG_BINARY entry whose name begins with the string **L$RTMTIMEBOMB**. (This is likely the only entry in this key.) The default permissions on this entry do not allow it to be modified or deleted, so these permissions must be changed.
4. Right-click the GracePeriod folder in the left pane of regedit and select Permissions.
5. In the permissions window that appears, select Administrators, and assign this group Full Control permissions. Click OK to close the window.
6. If an error indicates that the permissions could not be changed, take ownership of the folder by following these steps:
   1. If the permissions window is no longer open, right-click the GracePeriod folder and select Permissions again.
   2. Click Advanced.
   3. At the top of the Advanced Security Settings window, Click the Change link next to the current owner.
   4. Type Administrators in the blank and click Check Names. Confirm that the local Administrators group is listed and click OK.
   5. Check the box labeled Replace owner on sub containers and objects and click OK.
   6. Click OK again to close the permissions window, then attempt to change the permissions of the folder again.
7. Right-click the L$RTMTIMEBOMB… registry entry and select Delete. Click Yes to confirm the deletion.
8. Exit regedit.
9. Reboot the session host server in order for the registry change to take effect.

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