Outlook desktop only shows 12 months of Groups emails

[jm]

We see that Groups folders in Outlook desktop are limited to showing items from the last 12 months, no matter if sync settings for Cached Exchange Mode are increased to download all mail. Any workarounds apart from viewing these items on the web? I've been unable to find this limitation documented anywhere.

[#2 · Accepted solution]

That's the expected behavior, as documented here: https://docs.microsoft.com/en-us/outlook/troubleshoot/user-interface/only-subset-items-synchronized
You can use OWA to access the full set of messages.

[#3]

Thanks Vasil, just what we were looking for!