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Exchange Server 2016 Fails at Step 7

Hi,
I have been trying to install Exchange Server 2016 since three days.
it fails at the step 7 which says - ASEntsig.msi cannot be found int the source. The file i have locatied and tried to install but not able to do it.

Its a single small windows server 2012 r2 which is running with AD DS and IIS server, Sql Server.
it had Exchange Server 2013 installed previously. To change the domain i had removed AD DS and reinstalled it.
I went to uninstall it manually by deleting files in the IIS, V15 folder in 'C'
 drive. removed registry entries, and exchange entries which was there in config file in intserv.
This is the link i referred for removal - https://www.youtube.com/watch?v=2Bv3EEIe6uo 

Now it has stunk on step 7 which is giving the below error.

"the installed product does not match the installation source(s), until a matching source is provided or the installed product and the source are synchronized, this action cannot be performed".

Please help
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Shyam T
Asked:
Shyam T
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2 Solutions
 
Scott CSenior Systems EnginerCommented:
Just to clarify...you removed Exchange 2013 by manually deleting files and following a YouTube video?  Even in this video he says he did it in a lab environment.  This should never be done on a production machine.

Why didn't you run the proper uninstall?  Is there a specific reason?

This is not a supported way to remove Exchange.  Also, installing Exchange on a DC is not a supported configuration.

I'd say at this point your environment isn't stable and you should blow it away and start over from scratch if that's a possibility.

You also need to install Exchange on its own member server and not on a DC.

Exchange should only be installed on a DC when it's in a testing environment.

Even if you do get Exchange 2016 installed and working, you will never be sure it's in a stable environment.
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Simon Butler (Sembee)ConsultantCommented:
I would also add that I suspect the installation media is bad. Download a fresh copy. You can install from the latest CU, so download that rather than the original RTM.

Otherwise I agree with above - the machine needs to be wiped. You are in an unsupported configuration now.
With Windows 2012 R2 allowing two virtual licences per physical, there is NO excuse to have Exchange on a domain controller. Even in my labs I have them on separate machines.
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Simon Butler (Sembee)ConsultantCommented:
Question answered.
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