Thunderbird Portable

Hi there
I have been using a portable version of Thunderbird, on partition D for a long time, but because I find no way of making it the default Windows mail program, a feature that I often need, I have installed a local version but having problems with importing the data from the portable version, because it is well over the 2GB, actually around 6GB, with many accounts, too cumbersome to setup anew, etc.
I see instructions for importing data into the portable version, but not the other way round.

Sometimes Thunderbird Portable will let me drag and drop files to be attached to a message, other times it will not. (This morning it would; this afternoon it won't.) Is there a fix for this?
Note added a day later: Now it's working again.

When I try to open an attached file in an email message (say "Example.pdf") I get this error message, or something similar:

"An error occurred while opening a document from the file:
C:\Users\CHS2\AppData\Local\Temp\nsnD5B3.tmp\ContainedTemp\pid-20128\Example.pdf"

Based on ChatGPT, I tried adding a line like:

user_pref("browser.cache.disk.parent_directory", "D:\\cDat\\Programs\\TBird\\Temp");

but Thunderbird Portable overwrites the line if it's in prefs.js and ignores it if it's in user.js

Hi,

WIN 10, 64-bit, 128.5.2.esr, USB flash drive

2 tasks are offered:
“Write new message”
“Open address book”

The first opens a new message window for an unconfigured account.
The second opens an address book of an unconfigured account.

I need the version v128.5.* (ESR) version of Thunderbird PortableApps (and not the current v128.4.*).

v128.5.2 non-portable version is already released.

When will be the corresponding PortableApps version available?

The other week my computer at work was upgraded to Windows 11 after I had issues with it trying to boot.

About the same time I also got the latest update for Portable Thunderbird to update it to 128.4.1 on my portable hard-drive.

Now when I try to run Portable Thunderbird on that work computer the app window tries to display but only shows all white and then the "Thunderbird Crash Reporter" dialog opens after about 5 seconds.

Now taking the hard-drive home. I plug it into my laptop with Windows 10 running on it and everything opens normally.

Hi @all,

I have now for quite a while had problems w my TB portable use. It keeps crashing. I talked to their forum and they have released a new version 128.3.0esr. When will it be updated in here??

I am working on custom CSS for TB 102.10.1 on Win 10 and have discovered that the Portable install is not using the system color scheme for the menu bar at the top. A "regular" installation defaults to use the system color for the menu without any custom CSS. In a "regular" install AccentColor will change the color of an element to the accent color chosen in Windows settings. In the Portable install, it does not have any effect on the elements that I have experimented with.

Hello. Currently using the installed version 128.1.0esr x64. I use it for work and require maximum reliability and don't have any plugins. I just make do with the stock install. Wondering if I can copy the profile folder in \AppData\Roaming\Thunderbird\Profiles\ into the portable version and will just work?
Cheers.