Thursday, 30 April 2015

Disabling SMB Signing in Server 2012 R2

Disabling SMB signing can dramatically increase I/O performance over SMB shares - in order to do this we can use group policy:

Go to Computer Configuration/Policies/Windows Settings/Security Settings/Local Policies/Security Options, and set Domain member: Digitally encrypt or sign secure channel data (always) and Microsoft network server: Digitally sign communications (always) to Disabled.

You should now do a gpupdate /force and net del * OR restart the computer for changes to take effect.

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