Resource processing in RUM was cancelled and now RUM is locked (4296916)

After starting resource processing in RUM the process needed to be cancelled, after this was done RUM can not be used anymore.

Excerpt from User Guide:

Interrupting the Update Process

If you interrupt the resource update process by clicking Cancel or stopping the service, or if re-permissioning is stopped due to an error, Resource Updating Manager acts as follows:

. If you click Cancel during permission update, computers that are being processed at that moment will be processed to the end and objects on these computers will have new (target) permissions. Computers that are not being processed yet will not be processed and objects on these computers will keep old permissions. If you want to completely restore the system state, run Resource Updating Manager with the Revert to the original local group membership, user rights, and object permissions option.

. If you click Cancel while reverting changes, computers that are being processed at that moment will be processed to the end and objects on these computers will have source permissions. Computers that are not being processed yet will not be processed and objects on these computers will keep target permissions. If you want to restore the system state, run Resource Updating Manager with the Reassign local group membership, user rights, and object permissions to target users option.

. If you click Cancel during permission cleanup, computers that are being processed at that moment will be processed to the end and permissions of the objects on these computers will be cleaned up. Computers not being processed yet will not be processed and objects on these computers will be left intact.

In order to be able to use RUM please close RUM, open the services.msc snapin on QMM console machine and stop the Quest Resource Updating Manager Service, afterwards start the service again and start RUM.

Note: this information should be considered as workaround, only if there is need to use RUM immediately after cancelling the previous process. The process itself will continue running on each selected computer until it is finished.