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MSAzure101 asked MSAzure101 commented

Exchange 2013 CU23 Installation

84178-exchange-cu-update-23.pngHi guys, had some great for an earlier question, getting the below error

I have updated .Net Framework 4.8

I have run and rebooted in between the following steps separately

Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareSchema
Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAD
Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareAllDomains



Anyone come across this lately and have a good fix for it found this below from Practical 365

https://practical365.com/expired-certificates-cause-exchange-cumulative-updates-fail/

office-exchange-server-administrationoffice-exchange-server-mailflow
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ManuPhilip answered

As indicated in the error message, the reason for this error is auth certificate has expired. Now, the certificate renewal is bit tricky. As a workaround, try to change the system time of the server to a date that falls in the range where the certificate was still valid. Make sure that Windows Time is not running too. Resume the CU installation. Revert time and time services. Now, renew the certificate

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MSAzure101 answered MSAzure101 commented

Thanks Manu Philip, there are 3 certificates that have expired along with the Auth certificate.
Would it work to renew in EAC? I am going to take snapshot and try that in the morning, (once backups are successful tonight)

Any good links for this that you can recommend?

Much appreciated :)

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EAC can't work in this situation as the setup ran already. Setup can be finished with the workaround I mentioned. For Certificate renewal, there are plenty of references available in internet

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Thanks very much Manu Philips, this is a production environment so just looking for a few ways

Do you see the below link working?

https://supertechman.com.au/how-to-renew-an-expired-microsoft-exchange-server-auth-certificate/#:~:text=The%20Microsoft%20Exchange%20Server%20Auth%20Certificate%20has%20a,expired%20or%20is%20about%20to%20expire%2C%20dont%20stress.

Anybody come across this recently or had to resolve a similar issue?

Would be very grateful for some links if thats ok?

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I saw another answered thread here: exchange-2013-renew-microsoft-exchange-server-auth.html
I haven't personally tested the link you shared. However, looks like the procedure would work. I see the PowerShell cmdlets are applicable for the certificate renewal

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