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.

Learn More

Whenever I start Thunderbird, I now get a Systems Integration window with Set as Default and Skip Integration buttons. How do I stop getting this window?

  • 2 cavab
  • 8 have this problem
  • 2 views
  • Last reply by Wayne Mery

more options

The System Integration box just started appearing when I start Thunderbird. I've unchecked the box for Always perform this check when starting Thunderbird. I've uninstalled Thunderbird and reinstalled it. The checkbox in Options > General for checking for default email client is also unchecked. I do not have any other email client installed. Does anyone know how to stop it? Thanks.

The System Integration box just started appearing when I start Thunderbird. I've unchecked the box for Always perform this check when starting Thunderbird. I've uninstalled Thunderbird and reinstalled it. The checkbox in Options > General for checking for default email client is also unchecked. I do not have any other email client installed. Does anyone know how to stop it? Thanks.

Chosen solution

This is a current bug whose workaround is described in the two posts starting here:

https://support.mozilla.org/en-US/questions/1148107#answer-941265

Now fixed in TB 45.6 released Dec. 28 2016:

https://www.mozilla.org/en-US/thunderbird/45.6.0/releasenotes/

Read this answer in context 👍 1

All Replies (2)

more options

Seçilmiş Həll

This is a current bug whose workaround is described in the two posts starting here:

https://support.mozilla.org/en-US/questions/1148107#answer-941265

Now fixed in TB 45.6 released Dec. 28 2016:

https://www.mozilla.org/en-US/thunderbird/45.6.0/releasenotes/

Modified by sfhowes

more options

The fix going out in the next version. It might take 1-2 weeks to ship the new version 45.6.0