LDAP error 0x51. Server Down (80090304: LdapErr: DSID-0C0906C8, comment: AcceptSecurityContext error, data 1f, v3839).

getting insufficient rights error and LDAP error more frequently while using QMM to sync attributes and password across tenants. 

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  • Glad to help. That being said, Everything that says "insufficient rights" means one of two things: either the account is wrong, permissions are insufficient so you need to correct that, or something else in the environment (antivirus, security, etc.) is stopping the tool from doing its job. 

    One possibility from the KB is https://support.quest.com/migration-manager-for-ad/kb/4297299 - it's on a Read Only DC. If it isn't "really" a RODC, then something in the DC is not allowing the changes to be made. We'd need to deal with that. 

    Another possibility is that it's an old unpatched DC as in https://support.quest.com/kb/4351651. or something as simple as that you forgot to add the permissions as in https://support.quest.com/migration-manager-for-ad/kb/4292311 for example.

    The best thing to do is to look for the error message, within quotes, and site:support.quest.com on Google and search the KB that way. At least you can try all the different solutions (and document them) - and if it doesn't work, you can open a ticket with the documented steps and get it sorted a lot faster.