Thunderbird Connection To Server Timed Out Imap Settings

The “Connection to server timed out” error occurs when you are sending or receiving a message on Thunderbird email client. This error occurs when the Mozilla Thunderbird closes the active connection before downloading the emails.

thunderbird connection to server timed out imap

Carry out these steps to fix the Thunderbird Connection To Server Timed Out Imap account:

  • Step : 1 Open the Thunderbird application first.
  • Step : 2 If you are using Windows, click on the Tools menu and select Options from the drop-down list.
  • Step : 3 If you are using Mac, click on the Preferences tab from the Thunderbird menu.
  • Step : 4 Click the Advanced option and select the General tab.
  • Step : 5 Click the Config Editor button available at the bottom of the page and type “mailnews.tcptimeout” in the search field.
  • Step : 6 Give a right-click on the resulted file and select the Modify option to increase the value to 1000 or 2000.
  • Step : 7 Alternatively, click the Network & Disk Space tab from the Advanced settings and increase the Connection timeout to 60 to 120.
  • Step : 8 It is also recommended to clear the caches to resolve the error mentioned above on the Thunderbird email client.
  • Step : 9 If you have difficulties in resolving the Thunderbird Connection To Server Timed Out Imap, contact our technical support team for remote assistance.


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