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capnetFlag for United Kingdom of Great Britain and Northern Ireland

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Re-installing ad sync after a hybrid deployement

I would like to know if it is possible to setup ad sync after an exchange hybrid installation. This is the scenario.

I have an office 365 account that was in a hybrid scenario but now is cloud only. Exchange server is decommissioned.

I have experience setting up ad sync after a cut over migration using a method similar to the one shown here:

https://answers.microsoft.com/en-us/msoffice/forum/msoffice_o365admin-mso_dep365/ad-connect-dirsync-after-cutover-migration/cc3fe96a-7e86-493e-bcd1-58d4079596ef

I can find lots of articles that tell of the problems in decommissioning the last exchange server and keeping ad sync, but none which say you can't stop ad sync and re set it up from scratch. Obviously im not going to just try it. But would like to know if anyone can shed any light what is preventing it.

Its very frustrating to me I cannot keep password sync after implementing the best form of migration.
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timgreen7077

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Ad Connect was Implemented as part of the Hybrid, After the migration I removed it and also disabled sync in the cloud.

My concern is that maybe something of the hybrid is leftover in AD attributes which may cause it problems.
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timgreen7077

Oh ok. You should be able to reinstall AD connect with no issues and start resyncing objects again. I would test on a single OU first, maybe put your account and a couple other users and make sure password syncs fine also. After that you can move everyone else, but there should be no issues.
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Thanks for you help guys
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Is there any need for me to uninstall AD connect in these scenarios?

Could i just reconfigure AD connect not to be in hybrid mode and uninstall exchange?
I thought you already removed AD connect and was attempting to reinstall?
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I've got another 2 migrations to do
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Also just read that the setup is not supported by Microsoft without at least one exchange server.

I think thats were all the warnings come from.

Even though it is easy enough to change SMTP address's etc with Advanced attributes in AD
Please keep the question to a single issue because it get confusing at a point.

Is there any need for me to uninstall AD connect in these scenarios?

Could i just reconfigure AD connect not to be in hybrid mode and uninstall exchange?


If you performed a hybrid migration its not recommended to uninstall AD connect and the keep at least one exchange server. This is for management purposes or else you will need to manage certain aspects of the user via ADSIedit which can be a pain.
u can keep both exchange and AD connect?

u can even uninstall exchange, but its recommended to keep it for user management and Microsodft does provide you hybrid key license as part of o365 license scheme
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Keeping an exchange server on site is a pain, using advanced attributes in AD is a minor inconvenience, but thank you both for your help. Ill stay supported and leave it be.