HCL Notes Mac Client 14.5 FP1 is still experiencing issues on macOS 26 with M2 and higher
Daniel Nashed – 1 October 2025 13:32:13
Adam Osborn blogged about this already and we had an offline discussion about it --> https://ab1osborne.blogspot.com/2025/09/the-hcl-notes-mac-client-145-sp1-is.html
The Technote in it's current state does not reflect the issue Adam and others including me as seeing even after updating to 14.5 FP1.
https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0124211
The technote states that the first time the client is started does not come up.
What we are seeing on M2 and higher is that the client starts cleanly but when you try to shutdown the client, the client hangs in a way that you can't even shutdown macOS cleanly.
The technote is not yet updated, but HCL is aware of the situation. Adam and also Friedhelm Klein from TIMETOACT both have tickets open.
I updated my M4 mac mini to macOS 26.0.1 and I can reproduce the same hang.
Friedhelm checked with his whole team which CPUs are affected (they tested various combinations of M1-M4 including Max).
It turns out it starts with M2 and the M1 CPU is still working fine.
If you on a Mac with a M2 and higher, I would recommend to wait for the fix before updating to macOS Tahoe.
Thanks to Adam and Friedhelm for this great community work to narrow this down.
-- Daniel
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