Please follow the steps below to retain share permissions after reboot.
These steps update dependency of LanManServer.
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Open command prompt with administrator permission
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List LanManServer dependency
C:\> sc qc LanManServer -
Check current dependency
Our test server’s LanManServer depends on Samss and Srv
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Add NetDrive system service to the dependency list
You must include your current dependencies.
C:\> sc config LanManServer depend= Samss/Srv/NetDrive3_Service_x64_NetDrive3Blank after
depend=.Samss/Srv/NetDrive3_Service_x64_NetDrive3on the same line without spaces. -
Check updated dependency
C:\> sc qc LanManServer
After this change file sharing service will start after NetDrive system service.
You can also check current dependencies with Services.

Hope this helps.


