Created attachment 8560923 [details] tb-systemintegration-4882.png User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0 Build ID: 20150122214805 Steps to reproduce: if in thunderbird the client is not set as standart mail client, yet in windows 7 home, under standard application you select thunderbird as mail client, the errror comes as soon as you press on a mailto: link Actual results: gues what? internetexplorer starts innumeral threads to open an email app. this causes to system to slow down alot Expected results: well either firefox could have warned, yet if i would use chrome the issue probably would still be there, so i expect thunderbird to warn me if in windows i have chosen it as standart mail client, yet in the thunderbird setting i have unticked the option mail! i solved it by after 1 year wondering why. if i have opted right or being warned it would have solved easier, so i think you can make a promt at startup for having oppsed settings that may cause conflicts, so user can select -> remove thunderbird as standart client from windows settings, and a second button, to show the window in the image below. with the advise to chose it as mail client! thanks alot
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