We've been using Solar Accounts for about 12 years, and love it to bits. We've always used the offline version, and it's currently running on a Windows 10 PC.

We've always used Thunderbird as our email client, and it has always worked perfectly, for emailing Invoices/Receipts etc., until a couple of days ago.

Like a number or people we had a major problem with the latest Thunderbird "Supernova" release, and have had to roll back our installation to 102.15.1 in order to get it to work again.

Since then, we just get the "Failed to Launch your email client" message in Solar. Thunderbird is still set as our default emaill app. The only thread I can find on this subject is dated 2017, and doesn't help, as things seem to have changed since then - even if it was possible to get a 32 bit version of Thunderbird, would it run on Windows 10 ? I have to assume that we've always been running a 64 bit version, since we went onto Windows 10 - I've never needed to check.

Can anyone suggest a solution ?

Hello Chris,

Windows 10 (and 11) can run both 32- and 64-bit software, which is why you
can still run the old offline version of Solar Accounts. The most likely
problem is that you were previously running the 32-bit version of
Thunderbird but have now switched to the 64-bit version which is not
compatible with (offline) Solar Accounts. Please try uninstalling
Thunderbird and re-installing the 32-bit version

Mark,

Thanks for the reply.

I tracked down a 32 bit version of Thunderbird release 102.15.1 (the
latest that works) and installed it over my existing 64 bit version, but
it made no difference.

After that, I uninstalled the replacement 32 bit version, rebooted the
PC, and reinstalled it. Sadly, that hasn't worked either. What puzzled
me was that even though it was a reinstall, after a supposed uninstall,
the PC remembered all my profile settings, so it clearly wasn't a full
uninstall.

Would that make any difference ? Any suggestions as to what I do next ?

Hi Chris,

It's difficult for us to know what is causing the problem with your email
client. To help us investigate further, open the main Solar Accounts
window and press Ctrl + F9 (or Fn + Ctrl + F9 if your keyboard has an Fn
key). You should see a message saying that a diagnostic file called 'Solar
Accounts Log File.zip' was created in your Documents folder. Please email
me that file - it will help us better understand the error.