Forum Discussion
Costas_Psaltis
Dec 04, 2021Copper Contributor
Exchange 2010 to Exchange 2019 Migration
Old installation getting around to upgrading. Here are my problems\thoughts? Current environment is: Single 2008R2 server, AD, Exch 2010. Moving to Server 2019 vm's. Have a 2019 guest as a DC bu...
Thierry Chapuisat
Dec 07, 2021Brass Contributor
For your process you can't move directly from Exch 2010 to Exch 2019.
You need to add DC with the compatibility matrix of Exchange 2010 like Windows 2016.
https://docs.microsoft.com/en-us/exchange/plan-and-deploy/supportability-matrix?view=exchserver-2019#supported-active-directory-environments
After you can add Exchange 2016 server. Move the mailboxes on it. When is done remove the old DC then add Windows 2019 DC and Exchange 2019 server. Move the data from Exchange 2016 to 2019. When is completed remove the temporary Windows 2016 DC.
You need to add DC with the compatibility matrix of Exchange 2010 like Windows 2016.
https://docs.microsoft.com/en-us/exchange/plan-and-deploy/supportability-matrix?view=exchserver-2019#supported-active-directory-environments
After you can add Exchange 2016 server. Move the mailboxes on it. When is done remove the old DC then add Windows 2019 DC and Exchange 2019 server. Move the data from Exchange 2016 to 2019. When is completed remove the temporary Windows 2016 DC.
Costas_Psaltis
Dec 07, 2021Copper Contributor
@Thierry - Yes, found that out. So far what I've tested is the following.
Removed AD from existing 2008R2. Made existing "server2" a member. Promoted domain & forest to 2016. Still connects to OWA.
Created Server 2016 guest, applied .NET 4.8 & UCM & C++ req's as stated when attempted to install Exch2019. Exch2016 required kb3206632 as well. In the process of installing Exch2016CU21 right now to test mailbox migration.
Removed AD from existing 2008R2. Made existing "server2" a member. Promoted domain & forest to 2016. Still connects to OWA.
Created Server 2016 guest, applied .NET 4.8 & UCM & C++ req's as stated when attempted to install Exch2019. Exch2016 required kb3206632 as well. In the process of installing Exch2016CU21 right now to test mailbox migration.
- Thierry ChapuisatDec 07, 2021Brass ContributorGood job !
Everything look good
Let me know 😊- Costas_PsaltisDec 08, 2021Copper ContributorSo far so good migrating mailboxes. The only thing I forgot was to bump the mailbox limit so got some sync errors moving some mailboxes.
There is the next step, moving from Exch2016 to Exch2019. 🙂