Just installed SeaMonkey 2.53.20 here under Windows 11 Enterprise 64-bit, using the British English 64-bit installer from https://www.seamonkey-project.org/releases/2.53.20. Installed as administrator, accepted the licence agreement, accepted standard setup type, it checked the existing installation, installed to C:\Program Files\SeaMonkey, did "a little housekeeping", and installed. I did not accept the "Launch SeaMonkey now" option as I don't want it running as administrator, finished the installation, then launched "C:\Program Files\SeaMonkey\seamonkey.exe" as myself. Declined the options "Use SeaMonkey as the default client for Browser & Email (I use Firefox and Thunderbird), "Feeds" ticked but grey (unchangeable ?), and declined "Always perform this check when starting SeaMonkey". Pressed Ctrl-2 from the SeaMonkey "Release Notes" browser window, and it went into the Mail & Newsgroups New Account Setup. I accepted the default option of "Email account", clicked "Next", entered the same credentials as I am using to compose this reply ("Philip Taylor" / "P.Ta...@Rhul.Ac.Uk"), selected "IMAP" / "993" / "outlook.office365.com" / "p.ta...@rhul.ac.uk", clicked "Next", added my local SMTP server as Outgoing Server (details redacted), clicked "Next", accepted default Account Name, clicked "Next", clicked "Finish", selected the new account in the left-hand pane, selected "View settings for this account", updated Server Settings to "SSL/TLS" / "Oauth2" and clicked on "OK". Clicked on "Read messages", and was taken to https://login.microsoftonline.com/common/oauth2/v2.0/authorize?response_type=code&client_id=<remainder redacted> and entered my password then clicked "Sign in". Was instructed to enter a 2-digit code into my Microsoft Authenticator app (which I run under Bluestacks on the same PC), was offered no box in which to do so but instead offered a 6-digit authentication code which the interacting authenticator was willing to accept. After which I had full access to incoming and outgoing e-mail.
Hope this helps.
--
Philip Taylor
--------
Help, please. I've been using SeaMonkey since it first started but now I'm lost.
I've purchased a new Acer 5 Windows 11 Pro computer to handle the future. I've transferred files into the new machine with good fortune, except for SeaMonkey. It refuses to get past opening the Mail&Newsgroups window. It 's demanding a new Password and Username. I am using 2.53.20..
This email, its contents and any attachments are intended solely for the addressee and may contain confidential information. In certain circumstances, it may also be subject to legal privilege. Any unauthorised use, disclosure, or copying is not permitted. If you have received this email in error, please notify us and immediately and permanently delete it. Any views or opinions expressed in personal emails are solely those of the author and do not necessarily represent those of Royal Holloway, University of London. It is your responsibility to ensure that this email and any attachments are virus free.