How to identify custom settings before a CU upgrade?

Arthur Wilson 0 Reputation points
2024-07-23T18:13:34.0866667+00:00

I am preparing to update the latest CU. The instructions warn of backing up customized config files. Since I didn't set our server up originally, I really don't know how much customization has been done or where to look. Is this something you can help with?

Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
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  1. Andy David - MVP 147.9K Reputation points MVP
    2024-07-23T18:30:42.83+00:00

    It would typically be a web.config in the IIS dir. Honestly, I wouldnt worry about it. Those are rarely changed and if this CU13 2019 and above, those settings are saved:

    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/custom-configuration-preservation?view=exchserver-2019

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