Sync Office365 with AD

[mooner09]

Hi ,

Could you help me please how I can sync existing Office365 AD with existing AD on-premise, the problem is the person who was doing maintenance this, he added users and group separately first on AD on-premise and after that he added users on Office365, I can expect with different passwords on  .. how I can synchronize so that on both sides nothing remove

thank you very much,

[#2]

You have to "match" the users, either via Primary SMTP Address (soft match) or via objectGUID (hard match). Here are links with more detail:

https://support.microsoft.com/en-us/help/2641663/use-smtp-matching-to-match-on-premises-user-account...

https://docs.microsoft.com/en-us/archive/blogs/praveenkumar/how-to-do-hard-match-in-dirsync

[#3]

This might help you

https://www.windowstricks.in/2020/06/can-we-deploy-an-on-premises-ad-and-synchronize-all-the-already...

https://www.windowstricks.in/2020/07/how-to-move-or-migrate-on-premises-ad-account-between-domain-fo...

Regards,
Ganesamoorthy.S
www.windowstricks.in

[#4]

@Vasil Michev  thank you for answer, could you tell me please how I can protect if something going wrong , I mean how I can role back ? do I have any risk to lost emails or ...?

thank you very much,

[#5]

There's no rolling back, the accounts will be "linked". You can always backup any email/documents first.

[#6]

@Vasil Michev thank you for answer, could you tell me please I choose hard match way one by one sync AD account with existing office365 accounts  , but how about user groups how I can create on premise and sync with my existing groups on Azure AD

thank you very much for your help

[#7]

There is no "matching" process for groups, if you want to manage them centrally you'll have to sync them, and optionally remove the cloud-created ones.

[#8]

@Vasil Michev  thank you for your help , i have a question if I choose hard match sync one by one , and I saw in Office 365 have two SMTP:**** (ok one is SMTP:old.email@olddomain.com they do not use just received email) and one X400:  or X500 what is it ? 

thank you

[#9]

Hard-match is based on the objectGUID, not SMTP. Soft-match is for primary SMTP address, so the capital-case SMTP address.

[#10]

@Vasil Michev thank you for your help