Finding Uncached Exchange 2019 Outlook Clients

Question

Is there a way in Exchange 2019 to find which users are connecting to the server via uncached/online mode Outlook clients?

Answer 1

You should be able to distill this information from the RPC Client Access logs from your Exchange 2019 servers. Look for the fields ClientMode, which reports Classic for non-cached and Cached for cached-mode clients. Select unique client/user names, and you should be able to identify is they are using cached or non-cached mode.

LogParser Studio might help you process the log files
https://techcommunity.microsoft.com/t5/exchange-team-blog/log-parser-studio-2-0-is-now-available/ba-p/593266

Answer 2

Hi @Rachel N

Agree with the reply above, this thread discussed the same topic: How to find out Who is using Cached Mode in outlook
The RPC Client Access logs locate in:
<Install Path>:\Program Files\Microsoft\Exchange Server\V15\Logging\RPC Client Access

The detailed steps is:

1. Open the text file with Excel.
2. In the Text Import Wizard:
   Step 1: Select Delimited, click Next.
   
   Step 2: Check the checkbox Tab, Comma and Other, enter "," in the blank, then click Next.
   
   Step 3: click Finish.

3.Delete the type information and filter the log.

Classic is for Online Mode and Cached is for cache mode.

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