2053842 - Yahoo mail did not connect properly, error "Authentication failure while connecting"

Status: UNCONFIRMED

(Thunderbird :: Security, defect)

Description

[Worcester12345]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.0

Steps to reproduce:

Tried checking mail.

Actual results:

Yahoo mail did not connect properly.
Checked error log and saw error in title of bug.

Expected results:

Should have retrieved email from imap.yahoo.com and received no errors.

Comment 1

[Worcester12345]

153.0b10 (64-bit)

Comment 2

[Worcester12345]

Ubuntu Linux 26.04 (64-bit)

Comment 3

[Magnus Melin [:mkmelin]]

NotFoundError: No such JSProcessActor 'BrowserToolboxDevToolsProcess'ˇ is unrelated (and harmless afaik)

Comment 4

[Wayne Mery (:wsmwk)]

I changed this to not confirmed because yahoo is quite unpredictable, and it's not confirmed to be a recent regression.

Comment 5

[Wayne Mery (:wsmwk)]

John, how is yahoo working for you recently?

Comment 6

[john]

Wayne.... There s clearly a bug in the bugzilla system [ that has to be un common ! :) ]
I have no connecton to this bug !

Comment 7

[Wayne Mery (:wsmwk)]

(In reply to john from comment #6)

Wayne.... There s clearly a bug in the bugzilla system [ that has to be un common ! :) ]

So you are saying, your experience lately with yahoo is all good?

Comment 8

[john]

lol. within bounds -- except I m not Worcester12345. and s/he s probably languishing...
out of mere curiosity.
How did i end up in this chain ....?

Comment 9

[Wayne Mery (:wsmwk)]

How did i end up in this chain ....?

Nothing nefarious. Because you use yahoo and we're looking for independent experience, i.e. not the bug reporter's.

Comment 10

[john]

[smiling] I didn't suspect anything nefarious, just curious.
Thank you, by the way, for all your efforts supporting the product !

Comment 11

[Worcester12345]

Here is another Yahoo bug 1174797 that recently showed itself in my email. I don't know if it got bumped, or has anything to do with this.

Comment 12

[Wayne Mery (:wsmwk)]

(In reply to Worcester12345 from comment #11)

Here is another Yahoo bug 1174797 that recently showed itself in my email. I don't know if it got bumped, or has anything to do with this.

Only if you don't have cookies and js disabled. Did you disable them??

And are you still experiencing this problem with yahoo?
"Yahoo mail did not connect properly." does not seem like it would be the full, exact text of what would have been seen.

Please give more detail - screen shots, etc.

Comment 13

[Worcester12345]

(In reply to Wayne Mery (:wsmwk) from comment #12)

(In reply to Worcester12345 from comment #11)

Here is another Yahoo bug 1174797 that recently showed itself in my email. I don't know if it got bumped, or has anything to do with this.

Only if you don't have cookies and js disabled. Did you disable them??

And are you still experiencing this problem with yahoo?
"Yahoo mail did not connect properly." does not seem like it would be the full, exact text of what would have been seen.

Please give more detail - screen shots, etc.

Here is a new screenshot from today 8/15/26, 153.0b10 (64-bit) on Ubuntu Linux 26.04 (also 64-bit)

Comment 14

[Worcester12345]

Attachment: Thunderbird failure Screenshot From 2026-08-15 11-46-17.png

Comment 15

[Max Emig [:maxe]]

I have seen such an error on K9 Mail on Android, so it might actually be server-side here.

Comment 16

[Wayne Mery (:wsmwk)]

Worcester12345 Please in the future use the exact error text you see when filing a bug report. Collecting a screen shot when first seeing an issue might be helpful.

Comment 17

[Worcester12345]

(In reply to Wayne Mery (:wsmwk) from comment #16)

Worcester12345 Please in the future use the exact error text you see when filing a bug report. Collecting a screen shot when first seeing an issue might be helpful.

I did put in a screen shot.
Did you not see it? I just revisited it up top just now.