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Thunderbird update v78 errors with unsupported protocol

  • 2 replies
  • 1 has this problem
  • 11 views
  • Last reply by phildee1

phildee1
phildee1

Good Evening - I am a thunderbird user for 15years now and have never had a problem until v78! This update was automatically installed on my PC, without my knowledge, during the first week of August and I have been unable to log on to my server since, with a message stating that there is an error with my server protocols. So, I can neither download incoming nor send outgoing. I have tried every possible server setting to no avail. I want to ask if there is any chance of rolling back to the previous v68, which worked just fine? Or can you suggest what steps I can take to get my email operational again.

Many thanks Phil

Summary Operating System Windows 10 Home 64-bit CPU Intel Core i7 6700HQ @ 2.60GHz 62 °C Skylake 14nm Technology RAM 16.0GB Dual-Channel Unknown @ 1063MHz (15-15-15-36) Motherboard Dell Inc. 0503P4 (U3E1) Graphics Inspiron 7459 (1920x1080@60Hz) Intel HD Graphics 530 (Dell) 4095MB NVIDIA GeForce 940M (Dell) 57 °C ForceWare version: 442.23 SLI Disabled Storage 1863GB Seagate ST2000LM 003 HN-M201RAD (RAID ) 1862GB Western Digital WD Elements 25A3 USB Device (USB (SATA) ) 35 °C 1862GB Western Digital WD Elements 25A3 USB Device (USB (SATA) ) 35 °C Optical Drives No optical disk drives detected Audio Realtek Audio Operating System Windows 10 Home 64-bit Computer type: Tablet Installation Date: 30/09/2019 01:41:33 Serial Number: T487Y-B28W8-2QFXC-P8PBR-6Q7X4 Windows Security Center User Account Control (UAC) Enabled Notify level 0 - Never Notify Windows Update AutoUpdate Not configured Windows Defender Windows Defender Disabled Firewall Firewall Enabled Display Name Avast Antivirus Antivirus Avast Antivirus Antivirus Enabled Virus Signature Database Up to date Windows Defender Antivirus Disabled Virus Signature Database Up to date .NET Frameworks installed v4.8 Full v4.8 Client v3.5 SP1 v3.0 SP2 v2.0 SP2 Internet Explorer Version 11.959.18362.0 PowerShell Version 5.1.18362.1

Good Evening - I am a thunderbird user for 15years now and have never had a problem until v78! This update was automatically installed on my PC, without my knowledge, during the first week of August and I have been unable to log on to my server since, with a message stating that there is an error with my server protocols. So, I can neither download incoming nor send outgoing. I have tried every possible server setting to no avail. I want to ask if there is any chance of rolling back to the previous v68, which worked just fine? Or can you suggest what steps I can take to get my email operational again. Many thanks Phil Summary Operating System Windows 10 Home 64-bit CPU Intel Core i7 6700HQ @ 2.60GHz 62 °C Skylake 14nm Technology RAM 16.0GB Dual-Channel Unknown @ 1063MHz (15-15-15-36) Motherboard Dell Inc. 0503P4 (U3E1) Graphics Inspiron 7459 (1920x1080@60Hz) Intel HD Graphics 530 (Dell) 4095MB NVIDIA GeForce 940M (Dell) 57 °C ForceWare version: 442.23 SLI Disabled Storage 1863GB Seagate ST2000LM 003 HN-M201RAD (RAID ) 1862GB Western Digital WD Elements 25A3 USB Device (USB (SATA) ) 35 °C 1862GB Western Digital WD Elements 25A3 USB Device (USB (SATA) ) 35 °C Optical Drives No optical disk drives detected Audio Realtek Audio Operating System Windows 10 Home 64-bit Computer type: Tablet Installation Date: 30/09/2019 01:41:33 Serial Number: T487Y-B28W8-2QFXC-P8PBR-6Q7X4 Windows Security Center User Account Control (UAC) Enabled Notify level 0 - Never Notify Windows Update AutoUpdate Not configured Windows Defender Windows Defender Disabled Firewall Firewall Enabled Display Name Avast Antivirus Antivirus Avast Antivirus Antivirus Enabled Virus Signature Database Up to date Windows Defender Antivirus Disabled Virus Signature Database Up to date .NET Frameworks installed v4.8 Full v4.8 Client v3.5 SP1 v3.0 SP2 v2.0 SP2 Internet Explorer Version 11.959.18362.0 PowerShell Version 5.1.18362.1
Attached screenshots

Modified by Wayne Mery

Chosen solution

Your mail server probably is attempting to connect using SSLv3 and TLSv1 which are old and no longer support, according to https://bugzilla.mozilla.org/show_bug.cgi?id=1656742

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Wayne Mery
Wayne Mery
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Chosen Solution

Your mail server probably is attempting to connect using SSLv3 and TLSv1 which are old and no longer support, according to https://bugzilla.mozilla.org/show_bug.cgi?id=1656742

phildee1
phildee1 Question owner

Thank you. In the short term, I have my Thunderbird back up and running by setting the security to 'None' on both incoming and outgoing mail servers and by referencing my previous Tb profile. It is all working ok so I guess the problem is solved sufficiently to investigate with my ISP why the problem occurred in the first place and what they can do about it.