Hello Andreas,

On 10/9/23 20:02, Andreas Matthus wrote:
Hallo Carsten,

thank you for your answer.
Unfortunately deleting and/or change primary password give no success.

On javaconsole I see a difference:
---snipp
encrypted-openpgp-passphrase.txt corruption fixed. Corrupted file moved to 
/home/andreas/.thunderbird/ys2evdnt.default/encrypted-openpgp-passphrase.txt.corrupt
 masterpass.jsm:200:19
NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsISecretDecoderRing.encryptString]     _ensurePasswordCreatedAndCached chrome://openpgp/content/modules/masterpass.jsm:269
RNP.jsm:465:15
NS_ERROR_FAILURE: Couldn't decrypt string crypto-SDR.sys.mjs:199
NS_ERROR_FAILURE: Couldn't decrypt string crypto-SDR.sys.mjs:199
---snipp

Every time I start without --safe-mode encrypted-openpgp-passphrase.txt renamed to encrypted-openpgp-passphrase.txt-1.corrupt, encrypted-openpgp-passphrase.txt-2.corrupt and so on.

All extensions I deleted an purged thunderbird-l10n-de, but just the same result.

you can try to stop Thunderbird, backup the file key4.db from your profile folder, than remove that file and restart Thunderbird.

Thunderbird will create a new file and you should be able to set again a new master password.
Other possible corrupted files are cert9.db and logins.json.
If you remove these files you need to re-add all the passwords and certificates that were used! So be careful.

It's long ago but we did have similar bug report in the past there deleting the key4.db was the solution. But you

As always, please make a backup of your profile folder before doing any modification within the profile folder.

--
Regards
Carsten

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