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BradWilson-6180 asked KaelYao-MSFT commented

Exchange 2019 install failure

I am working on an exchange upgrade to continue to provide a hybrid migration with Office 365. We currently have Exchange 2013 and I want to move to 2019.

Yesterday I setup a new WIndows Server. I joined it to the domain and then started with exchange. My first step was to update EX2013 to the latest CU. After I did this I went back and installed EX2019 on this new Win2019 server.
I only did the management tools install. This morning I went back and added the mailbox role and it failed about 80% of the way through.

I have tried to uninstall several times.
I tried to change the registry key for HKLM\Microsoft\exchange\V15\MailboxRole and removing the uninstall.
I have tried to remove unattended.

I am pretty much stuck.
I can give more information from the logs if you need them.

office-exchange-server-administrationoffice-exchange-hybrid-itpro
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Hi @BradWilson-6180

Did you uninstall Exchange successfully?
If not, was the error message like "An incomplete installation was detected. Run setup to complete Exchange installation"?

If you rerun setup to install, will it still fail like the first time you try to install?
If the install fails, please post the detailed error message.
(Note:please remember to hide your personal information for security)

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Hi @BradWilson-6180

I am writing here to confirm with you how thing going now?
Did the issue get resolved?

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