NetVault service won't start, fails to allocate shared memory (4048023)

This article is a complementary article to the already existing solution #SOL78784 "NetVault service/processes will not start" which should also be checked.

NetVault service fails to start.

Trace shows NetVault fails to get shared memory:
2 SHM ??? 8940 26 0 141357704276 Create shared memory 'Global\NetVault_SharedMemory_EXCHANGE_0'
5 SHM ??? 8940 8 0 141357704276 shared memory name is already in use
5 SHM ??? 8940 10 0 141357704276 FALSE = ShmAllocate(0x00445CD0, 2048000)
0 PMGR ??? 8940 27 0 141357704276 failed to get shared memory for process manager
6 SYSTEM ??? 8940 20 0 141357704276 Logging 'Process 'nvpmgr' failed to get shared memory' to system logs
3 PMGR ??? 8940 35 0 141357704276 PmgrInitSharedMem return FALSE
0 PMGR ??? 8940 158 0 141357704276 Failed to initialize shared memory
2 PMGR ??? 8940 146 0 141357704276 FALSE = PmgrInitialize()
0 PMGR ??? 8940 2 1 141357704276 Failed to initialize giveup
5 PROCESS ??? 8940 13 0 141357704276 ProcCleanup(1)