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Unable to retrieve email (Gmail) with v31.3.0 and newest v38.1.0

  • 3 replies
  • 1 has this problem
  • 2 views
  • Last reply by kevin301

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Previously I updated from v24.6.0 to v31.3.0, and I could no longer retrieve my office mails (hosted by Gmail).


I press Shift-F5 and get the error "Unable to connect to your IMAP server. You may have exceeded the maximum number of connections to this server. If so, use the Advanced IMAP Server Settings dialog to reduce the number of cached connections."

I did as instructed, reducing the original value from '5' to '1' in incremental steps, all without success.

Someone suggested I 'downgrade' back to v24.6.0, and it did the trick. Recently there was an update to v38.1.0, and I installed the update, thinking it would solve the issue, but alas no success either. My work email is hosted on a Gmail account, which I presume is really common. I really don't know what is the issue, except that going back to v24.6.0 works.

Hopefully there can be a solution from the developers.

Previously I updated from v24.6.0 to v31.3.0, and I could no longer retrieve my office mails (hosted by Gmail). I press Shift-F5 and get the error "Unable to connect to your IMAP server. You may have exceeded the maximum number of connections to this server. If so, use the Advanced IMAP Server Settings dialog to reduce the number of cached connections." I did as instructed, reducing the original value from '5' to '1' in incremental steps, all without success. Someone suggested I 'downgrade' back to v24.6.0, and it did the trick. Recently there was an update to v38.1.0, and I installed the update, thinking it would solve the issue, but alas no success either. My work email is hosted on a Gmail account, which I presume is really common. I really don't know what is the issue, except that going back to v24.6.0 works. Hopefully there can be a solution from the developers.
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I think you may well find the issue is external to Thunderbird, and hold great hope for mail to download in the operating systems safe mode.Please, try the following:

  • Restart Thunderbird with add-ons disabled (Thunderbird Safe Mode). On the Help menu, click on "Restart with Add-ons Disabled". If Thunderbird works like normal, there is an Add-on or Theme interfering with normal operations. You will need to re-enable add-ons one at a time until you locate the offender.
  • Restart the operating system in safe mode with Networking. This loads only the very basics needed to start your computer while enabling an Internet connection. Click on your operating system for instructions on how to start in safe mode: Windows 8, Windows 7, Windows Vista, Windows XP, OSX
If safe mode for the operating system fixes the issue, there's other software in your computer that's causing problems. Possibilities include but not limited to: AV scanning, virus/malware, background downloads such as program updates.
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If safe mode does not work. Please add the troubleshooting information to your post To find the Troubleshooting information:

  • Open Help (or click on three-line-icon and select Help)
  • Choose Troubleshooting Information
  • Use the button Copy to clipboard to select all. Do not check box "Include account names"!
  • Paste this in your post.
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Thank you so much for your help and advice! :)

I did try the method you suggested (safe mode, etc), however it still cannot solve the issue. Have referred it to someone significantly more IT-savvy than myself. He will take a look at it soon. My presumption is that it is something to do with the firewall equipment or settings in my building.

In the meantime I'm on v 24.6.0 and it works fine.