Please, do you know, what is the impact on the service, if we disable SMBv1 protocol on Domain Controller?

Indeed We have several Operating system : Windows server 2003, 2008, 2012, windows 7 and 10.

I am waiting for your response as soon as possible.

Best regards,
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Cliff GaliherConnect With a Mentor Commented:
You can't disable it if any 2003/XP machines remain. They don't do newer SMB protocols and group policy, among other things, uses SMB.

REALLY REALLY REALLY, replace those old OSes.
DRRAMAuthor Commented:
Please do you know any site of recommendation from microsoft
JohnConnect With a Mentor Business Consultant (Owner)Commented:
Cliff is correct and just Google for "end of life" for Windows XP, Server 2000, Server 2003.  Everything needs to be Server 2008 or newer and Windows 7 or newer. Then you can happily remove SMBv1
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DRRAMAuthor Commented:
What are the consequence if we disabled SMBv1 ?
JohnBusiness Consultant (Owner)Commented:
If you disable SMBv1, you cannot connect the older systems.
MaheshConnect With a Mentor ArchitectCommented:
windows XP and 2003 only listens to SMB1 as client and server side as well
Computer browser service actually use SMB1 protocol
if you remove this feature from DCs, they won't authenticate 2003 / xp machines anymore which is the major impact
DRRAMAuthor Commented:
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