Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

ఇంకా తెలుసుకోండి

Logon failure: unknown user name or bad password

  • 2 ప్రత్యుత్తరాలు
  • 3 ఈ సమస్యలు కలిగి ఉన్నాయి
  • 1 వీక్షణ
  • చివరి సమాధానమిచ్చినది S3an

more options

I've been using Thunderbird without issue for business for nearly eight years now. I currently run it on a lap top with Windows 7 Pro. There is only one account/e-mail address on Thunderbird.

This morning when I went to check my e-mail I was prompted for my password then received the error "Sending of password did not succeed. Mail server exchange.company.com responded: Logon failure: unknown user name or bad password." I retried the password, restarted Thunderbird and tried it again but still received the same error. I sent a test e-mail from Thunderbird which went through just fine. I'm also able to log on to the exchange server via web browser and I am able to send and receive e-mail on my mobile device.

I've cleared all of the saved passwords from Thunderbird and I've verified the account settings but I'm still unable to download any e-mail to Thunderbird.

Apart from deleting the account, I'm not really sure what to do here. Any help would be much appreciated!! Thanks.

I've been using Thunderbird without issue for business for nearly eight years now. I currently run it on a lap top with Windows 7 Pro. There is only one account/e-mail address on Thunderbird. This morning when I went to check my e-mail I was prompted for my password then received the error "Sending of password did not succeed. Mail server exchange.company.com responded: Logon failure: unknown user name or bad password." I retried the password, restarted Thunderbird and tried it again but still received the same error. I sent a test e-mail from Thunderbird which went through just fine. I'm also able to log on to the exchange server via web browser and I am able to send and receive e-mail on my mobile device. I've cleared all of the saved passwords from Thunderbird and I've verified the account settings but I'm still unable to download any e-mail to Thunderbird. Apart from deleting the account, I'm not really sure what to do here. Any help would be much appreciated!! Thanks.

ఎంపిక చేసిన పరిష్కారం

The problem was solved. Apparently the POP stack had to be reset from the Exchange side.

Hopefully this helps someone in the future...

ఈ సందర్భంలో ఈ సమాధానం చదవండి 👍 0

ప్రత్యుత్తరాలన్నీ (2)

more options

I just noticed that I get an error message that reads "Sending of username did not succeed." as well. So it's bot the username and password.

more options

ఎంపిక చేసిన పరిష్కారం

The problem was solved. Apparently the POP stack had to be reset from the Exchange side.

Hopefully this helps someone in the future...