Hello community. I have a similar problem that is that brings up this dialog: Another application is attempting to send.....

Our case is that we have five RDP servers with multiple users on each of them. Some of them use Thunderbird for an E-mail client and connect their addresses as an imap to the client. All of a sudden users start to get this Confirm dialog when they try to call up default E-mail client through our local software witch is an MS Access software. The choose is given to click OK or Cancel on this dialog window but nothing happens after that. The only thing our software does is calling for the default E-mail client, new E-mail with attachment.

I've tested one of our user and despite the ugly method of getting Thunderbird away as a default E-mail client for a user I manage to set up Outlook as his default E-mail client. Tried the same procedure to send an E-mail through our software and everything runs smooth....

This started on last Wednesday I think and Thunderbird is up to date. Am considering to try to downgrade it this evening on at least one server to see is its 60.5.2 that is giving us all this headache.

https://support.mozilla.org/en-US/questions/1248361?page=2#answer-1201340

sfhowes said

https://support.mozilla.org/en-US/questions/1248361?page=2#answer-1201340

Oh my, I'm glad now. This has made my day :) thank you very much.

I'm having the same problem, and it seems it is indeed a bug with the latest update. Problem is when I follow the link provided to download, all I get is a list that looks like this, but there is no button to download or do anything so I'm confused. Maybe I'm missing something?

Index of /pub/thunderbird/releases/60.5.2/win64/ Type Name Size Last Modified Dir ..

Dir ar/

Dir ast/

Dir be/

Dir bg/

Dir br/

Dir ca/

Dir cs/

Dir cy/

Dir da/

Dir de/

Dir dsb/

Dir el/

Dir en-GB/

Dir en-US/

Dir es-AR/

Dir es-ES/

Dir et/

Dir eu/

Dir fi/

Dir fr/

Dir fy-NL/

Dir ga-IE/

Dir gd/

Dir gl/

Dir he/

Dir hr/

Dir hsb/

Dir hu/

Dir hy-AM/

Dir id/

Dir is/

Dir it/

Dir ja/

Dir kab/

Dir kk/

Dir ko/

Dir lt/

Dir ms/

Dir nb-NO/

Dir nl/

Dir nn-NO/

Dir pl/

Dir pt-BR/

Dir pt-PT/

Dir rm/

Dir ro/

Dir ru/

Dir si/

Dir sk/

Dir sl/

Dir sq/

Dir sr/

Dir sv-SE/

Dir tr/

Dir uk/

Dir vi/

Dir xpi/

Dir zh-CN/

Dir zh-TW/

Different language setups, just pick your and dl the file.

Thanks so much, duh, sorry. I usually have everything done automatically.

Anyway, I installed the update from the link and now the other apps that were giving me problems are working fine, but my main concern QuickBooks is still not attaching the invoice and opening up a page as before to email. Maybe QB has to be restarted, or the computer. I will reboot and report back.

So, I had to uninstall Thunderbird a few times, because while the first reinstall made things work again when trying to scan from email or another application, my Mozilla Thunderbird option disappeared from QuickBooks. It was saying to uninstall both QB and MT, but luckily just uninstalling MT and closing and reopening QB put the option back. Now, everything seems to be working!

Thanks so much for the help above, otherwise I wouldn't have known where to start to find a solution.

sfhowes said

https://support.mozilla.org/en-US/questions/1248361?page=2#answer-1201340

Hello all. I inadvertently fixed the problem on my PC. Followed the above link BUT downloaded it from the 64 bit directory: http://ftp.mozilla.org/pub/thunderbird/releases/60.5.2/win64/ Still didn't work. Even worse after installation - now the warning is "you need a mapi blah blah blah"

.... long story ... W10 has installed many new "user" directories on 2 different drives in my PC one being an SSD.

... short story ... "profiles.ini" between C:\Users\*name*\AppData\Roaming\Thunderbird F:\Users\*name*\AppData\Roaming\Thunderbird were different. Edited the profiles.ini on C drive to match the F drive and it now works like a charm.

That said I am in no hurry to update to the latest release. And now I have to apologize to the support people at Endicia.