You are being told it is up to date because you are using the ESR version, For the monthly (now the default) version, download from thunderbird.net and install version 150

Thank you for your reply. I've tried to download and install the latest version (150) and I am hit with an error message that states: Sorry, Thunderbird can't be installed. This version of Thunderbird requires Microsoft Windows 10 x64 or newer. Please click the OK Button for additional information.

According to the System Specification, my system is running Windows 10 Pro and the System Type states '64-bit operating system, x64 based processor'. The system also complies with the System Requirements shown in the explanation page that comes up, in that it has a 3.00Ghz processor, 8Gb Ram and 2.26Tb attached storage.

Thanks again

Thanks for feedback. Puzzling. Let me find a more experienced person to assist.

Thank you...

I'm still searching. Could you please post a screenshot of the error message? thanks

I got some wizard advice, and I pass it on here:

User seems to have W10 32-bit, even though CPU is 64-bit (I have similar PC), although User Agent states W64, so maybe needs to install 151 32-bit. Current OWL is 150 and lower, although update should be coming soon. So they can install 150 with OWL or try 151 with built-in Exchange. 32-bit OS cannot be upgraded to 64-bit except clean install (which offers few advantages for most users).

Does that help?

Thanks you for your assistance... that sort of makes sense to me but I'll have to do some experimenting to see if the problem has been resolved... I hoipe you will bear with me and I'll get back to you one way or the other.

Thanks again for your courteous help

Rob

I'll be here, hoping for the best. :)