SID changing
This option is effective when recovering Windows 8.1/Windows Server 2012 R2 or earlier.
This option is not effective when recovery to a virtual machine is performed by Agent for VMware, Agent for Hyper-V, Agent for Scale Computing HC3, or Agent for oVirt.
The preset is: Disabled.
The software can generate a unique security identifier (Computer SID) for the recovered operating system. You only need this option to ensure operability of third-party software that depends on Computer SID.
Microsoft does not officially support changing SID on a deployed or recovered system. So use this option at your own risk.