Tabs not reopening at startup
Hello everyone, my thunderbird 78.10.2 (64-Bit) win10 does not reopen it's tabs on startup. This behaviour started some months ago after an update. I tried to delete the session.json file, but it doesn't help. In fact my thunderbird here does not create a new session.json file as it should if I understood other replies to that topic correctly. In the session.json I can see the tabs listed which were open back in the day.
What can I do to fix that?
Thank you for reading,
Michael
All Replies (7)
...Maybe related: this Thunderbird installation dates back maybe 15 years or longer, so there might be leftovers from old versions or addons. I am not using any addons right now, but I don't know what to delete to clean it up.
...And the date from the last session.json file is sept 15th 2020. This could be the time when it stopped working.
Did you do it exactly like this:
In Thunderbird
- Help> Troubleshooting Information
- Under 'Application Basics - Profile Folder - click on 'Open Folder'
A new window opens showing the contents of the 'profile name' folder
- Exit Thunderbird now - this is important
- rename the 'session.json' file as 'session.json.bak' or delete it.
- Restart Thunderbird.
This should force a new session.json file to be created. Open some tabs.
Exit Thunderbird. Wait a few moments for background processes to complete. Restart Thunderbird.
Report back on results.
That's exactly what I've done - probably 20 times now...
I've also gone through the help / restart with deactivated addons / deactivate all addons a few times.
My first thunderbird installation dates back to the early 2000s and the profile folder has been with me ever since across many computers. I did use some addons over the years which are all defunkt now, so no addons at the moment. I tried to delete some files from the profile folder now which looked old and unused, but it didn't make a difference.
Is there a way to reset / clean the profile folder without deleting the mail-accounts? Or could it be related to the calendar? I did use the calendar a long tme ago when it was an addon, but it didn't work reliably then for me. If I remember right, the trouble might have started with the version which includes the calendar now. My calendar is available in thunderbird now, but I didn't add the account data again. Thunderbird must have used the data from a long time ago.
Thank you for your help :-)
Michael
Do you use any program like CCleaner or WiseCleaner or even some Anti-virus products now have the abilty to clean up files? They often target session files. If yes, then you need to make the Thunderbird profile folder and its files exempt, so stopping access.
No, I don't have anything like that running permanently. I have used ccleaner every once in a while though and have Kaspersky Internet Security on permanently. Afaik there is no 'cleaning function' included with Kaspersky. If those were causing the problem, then the trouble wouldn't have started with updating TB? At least it seems like a very strange coincidence. After that one update the Tabs just didn't come back automatically when I open TB. At first I thaought it was a bug that might get fixed, but months later I realized that it still works on other systems, just not here.
Just to be clear: ccleaner was banned from autostart, it only runs if I start it.