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DHCP server scanning...failed with error: Cannot resolve collation conflict for equal to operation.


First I thought our 2 DHCP servers were conflicting so I removed both from IPAM and added 1 at a time. I have tried them both but I keep getting the same error. 

IPAM indicates the server is up at first but then it quickly goes down. Same with the subnets - they all look good then in less than 1 minute, all the subnets go grey.

the system error I'm getting is:

DHCP server scanning for 'DHCP Server '****DHCP'' failed with error:Cannot resolve collation conflict for equal to operation.


Is this an SQL problem?

Can anyone recommend me a course of action?

Do I need to start by looking to upgrade SQL?

Any information will be greatly appreciated. 

Thank you.




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