From time to time the SCCM console crashed, leaving objects locked from editing. If you don't have time to wait for an automatic unlock, do the following:

 

- Start SQL Management Studio and connect to the CM database

- Run select * from SEDO_LockState where LockStateID='1' and copy the id that is locked

- Run delete from SEDO_LockState where id='ID_FROM_ABOVE_SELECT'

 

Out!