Do you mean CC field in the external email you have received? I have got an email on v. 8.3 where CC field did not work in the SERP and the CC adressee haven't received a copy of the email.
Hello,
We also have a customer on windows who is on 2026-02-28 having the exact same error message after updating.
The title of the messagebox is in our case is: "C:\Program Files(x86)\Han...
