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SistemasCorts-2467 avatar image
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SistemasCorts-2467 asked ·

Installing KB5000871 - Error writing dll

Hello. I'm trying to install this kb due to 0day vulnerability in my Exchange 2013. I have a DAG but when I try to install, fails because says some dll are not accesible. I have checked my user has all the permissions to access and write that dll. I tried to copy the dll from the other Exchange 2013 and for some of them, it worked but then, there's another that fails so I can't go on with the update. Some of the dll that fails are in forder: %exchangeserver%\FrontEnd\HttpProxy\bin Any idea about how I can solve it would be appreciated.

office-exchange-server-itpro
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AshokM-8240 avatar image
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AshokM-8240 answered ·

Hi @SistemasCorts-2467

Do you have any Antivirus installed on the Exchange server? If so try disabling it and install the update.
If it still fails, share the error message covering personal information.

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I disabled the antivirus but it didn't work

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EricYin-MSFT avatar image
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EricYin-MSFT answered ·

Hi,
Have you tried copy the DLL files from the other server this time (you'd better make a backup before doing this)?
I'm asking this because another issue is solved this way: https://docs.microsoft.com/en-us/answers/questions/299032/kb5000871-killed-my-exchange-2013-server.html


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I am writing here to confirm with you how the thing going now?
If you need further help, please provide more detailed information, so that we can give more appropriate suggestions.


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I have tried to copy files from another server. It works for de firs five files but then fails.

In the end, I have installed another server, patched it and I'm copying exchange databases to the new one.

thanks

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