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ititmem-5767 avatar image
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ititmem-5767 asked YukiSun-MSFT commented

Exchange server custom settings related


hi.
exchange You want to upgrade your on-premises 2013 cu. (cu8 to cu23)

When I upgrade, the custom settings are overwritten. What do I need to back up?

What I backed up were IIS backup and the FrontEnd folder in the exchange installation directory, and the Bin folder.

office-exchange-server-administration
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YukiSun-MSFT answered YukiSun-MSFT commented

Hi @ititmem-5767,

To backup the customization files before upgrading Exchange, please check the file locations listed below, make a backup for the files you have customized:

  • %ExchangeInstallPath%Bin\MSExchangeMailboxReplication.exe.config

  • %ExchangeInstallPath%FrontEnd\HttpProxy\Sync\web.config

  • %ExchangeInstallPath%ClientAccess\Sync\web.config

  • %ExchangeInstallPath%FrontEnd\HttpProxy\ews\web.config

  • %ExchangeInstallPath%ClientAccess\exchweb\ews\web.config

  • %ExchangeInstallPath%FrontEnd\HttpProxy\owa\web.config

  • %ExchangeInstallPath%ClientAccess\Owa\web.config

In addition, it's recommended to see the Upgrade Exchange to the latest Cumulative Update article for the other best practices when installing Exchange Cumulative Updates.


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Hi @ititmem-5767,

I am writing to check if provided information is helpful. Please let me know if you need further assistance. Thank you.


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