I run 2 instances of TB at once. One for personal emails, and one for work.
I'd like to change the icon of the Work Thunderbird so that its obvious which is which, because i switch between them all day long.
I opened up ThunderbirdPortable.exe in XN Resource Editor 220.127.116.11
Saved the icon 103 as an icon (with all the diff icon formats inside)
Opened the icon in IcoFX, edited the icons.
Then in XN Resource editor I added the new ICON, removed the old one, changed the language and resource number to be the same.
Now windows recognizes the new icons, I see my new icon showing on ThunderbirdPortable.exe but when I try run it I get a NSIS checksum error saying the integrity of the 'installer' has changed etc.
So it seems thunderbird was made portable with the Nullsoft installer.
There is apparently a commandline switch /NCRC which is supposed to skip the checksum check. But it doesn't work, the checksum error persists.
If I had more skills I would edit the exe in a hex editor and NOP the JUMP or whatever it is.
Anyway so I'm wondering if anyone here knows how to reset or disable the checksum check?
Btw I tried the icon change on thunderbird.exe in the app\thunderbird folder. It ran fine, but the original icon persisted, which means the taskbar icon is coming from thunderbirdportable.exe
Here is the icon I made.