Hi, saw this msg the first time yesterday. I am on Debian with Thunderbird 115.15.0 (64-bit) I get this msg at startup: <yellow triangle with exclamation mark> Alert from account <existing account name written here>: <some code with letters, numbers, punctuation> InvalidParameter id: <same code again>_CFR_1 I don't know if the <same code again> is specific to my email account, so I did not write that here. Can't find any post on this InvalidParameter id. I did not reconfigure that particular email account or changed any config in Thunderbird, besides what regular updates bring. I have removed the email account from Thunderbird and reconfigured it, same msg. I could recreate the email account on the hosting side, but before I do that I wanted to see if there is more info about this problem, to avoid with other accounts in the future, maybe there is something preventive I can do ... Thanks for any idea.