Error 0x8033813C

Value: -2144108228 | 0x8033813C | 2150859068

What does it mean ?

ERROR_WSMAN_PUSHSUBSCRIPTION_INVALIDUSERACCOUNT  
The WS-Management client cannot process the request. To use the WSManSubscribe API the user has to be running under Network Service account. No other account is supported currently for push subscriptions.
Value: 33084 | 0x813C | 0b1000000100111100

Where does it come from ?

FACILITY_WINRM  
Windows Resource Manager
Value: 51 | 0x033 | 0b00110011

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