After 31July2018 TB fails to connect to my gmail acct, but I can still access gmail from browser and 2 cell phones.
I can still access my gmail acct from Linux and Win10 via Firefox. My old Galaxy S5 still lets me access my gmail acct via wifi, and my new Galaxy S9 seems to have no problem accessing my gmail acct - so, the acct and password are unchanged. Thunderbird is always up, the last Windows 10 system reboot was 21July and Thunderbird hasn't been updated since, nor was it ever restarted till today. Thunderbird is setup for IMAP to both my ISP email acct (still working ok) and IMAP to my gmail acct. I've changed the Authentication method for the gmail IMAP server setting to OAuth2, to no effect. When I try to get messages from the gmail acct, I get the error "Failed to connect to server imap.googlemail.com." Turning off the firewall on the PC does not help.
I can still access my gmail acct from Linux and Win10 via Firefox. My old Galaxy S5 still lets me access my gmail acct via wifi, and my new Galaxy S9 seems to have no problem accessing my gmail acct - so, the acct and password are unchanged. Thunderbird is always up, the last Windows 10 system reboot was 21July and Thunderbird hasn't been updated since, nor was it ever restarted till today. Thunderbird is setup for IMAP to both my ISP email acct (still working ok) and IMAP to my gmail acct. I've changed the Authentication method for the gmail IMAP server setting to OAuth2, to no effect. When I try to get messages from the gmail acct, I get the error "Failed to connect to server imap.googlemail.com." Turning off the firewall on the PC does not help.
Alle svar (3)
Please post your Troubleshooting Information.
At the top right of the Thunderbird window, click the menu button 
, then select Help > Troubleshooting Information.
Press the "Copy text to clipboard button" and paste the information into your reply.
Application Basics
Name: Thunderbird Version: 52.9.1 User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 Profile Folder: Open Folder
(Local drive) Application Build ID: 20180709124824 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Profiles: about:profiles
Mail and News Accounts
account1:
INCOMING: account1, , (none) Local Folders, plain, passwordCleartext
account2:
INCOMING: account2, , (pop3) popa.midco.net:995, SSL, passwordCleartext
OUTGOING: , smtpa.midco.net:587, trySTARTTLS, passwordCleartext, true
account4:
INCOMING: account4, , (imap) groot:143, plain, passwordCleartext
OUTGOING: , smtpa.midco.net:587, trySTARTTLS, passwordCleartext, true
account5:
INCOMING: account5, , (nntp) news.sunflower.com:119, plain, passwordCleartext
OUTGOING: , smtpa.midco.net:587, trySTARTTLS, passwordCleartext, true
account6:
INCOMING: account6, , (nntp) msnews.microsoft.com:119, plain, passwordCleartext
OUTGOING: , smtpa.midco.net:587, trySTARTTLS, passwordCleartext, true
account7:
INCOMING: account7, , (imap) imap.googlemail.com:993, SSL, OAuth2
OUTGOING: , smtp.googlemail.com:465, SSL, passwordCleartext, true
account8:
INCOMING: account8, , (nntp) secure.usenetserver.com:563, SSL, passwordCleartext
OUTGOING: , smtpa.midco.net:587, trySTARTTLS, passwordCleartext, true
Crash Reports https://crash-stats.mozilla.com/report/index/bp-8c6b8ae1-24eb-4079-b9f6-6d38f0180311 (3/11/2018) https://crash-stats.mozilla.com/report/index/bp-ec8edb7b-e027-40d8-b4b7-731f70180228 (2/27/2018) https://crash-stats.mozilla.com/report/index/bp-e471d338-bacb-477a-a264-556510180224 (2/23/2018) https://crash-stats.mozilla.com/report/index/bp-2edb5eba-abbf-40de-bb6e-d090c0180126 (1/26/2018) https://crash-stats.mozilla.com/report/index/bp-2cced72a-3c91-4bc8-a0ba-7434e0180123 (1/23/2018)
Extensions
Enigmail, 2.0.7, true, {847b3a00-7ab1-11d4-8f02-006008948af5}
Google Calendar Tab, 3.9, true, googlecalendartab@momo
Lightning, 5.4.9.1, true, {e2fda1a4-762b-4020-b5ad-a41df1933103}
LookOut, 1.2.13, true, [email protected]
Provider for Google Calendar, 4.4, true, {a62ef8ec-5fdc-40c2-873c-223b8a6925cc}
Remove Duplicate Messages, 0.1.14, true, {12345678-1234-1234-1234-123456789abc}
Extra Folder Columns, 1.1.5, false, extra-cols@jminta_gmail.com
Important Modified Preferences
Name: Value
accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 358400
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.smart_size_cached_value: 358400
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
extensions.lastAppVersion: 52.9.1
font.name.monospace.el: Consolas
font.name.monospace.tr: Consolas
font.name.monospace.x-baltic: Consolas
font.name.monospace.x-central-euro: Consolas
font.name.monospace.x-cyrillic: Consolas
font.name.monospace.x-unicode: Consolas
font.name.monospace.x-western: Consolas
font.name.sans-serif.el: Calibri
font.name.sans-serif.tr: Calibri
font.name.sans-serif.x-baltic: Calibri
font.name.sans-serif.x-central-euro: Calibri
font.name.sans-serif.x-cyrillic: Calibri
font.name.sans-serif.x-unicode: Calibri
font.name.sans-serif.x-western: Calibri
font.name.serif.el: Cambria
font.name.serif.tr: Cambria
font.name.serif.x-baltic: Cambria
font.name.serif.x-central-euro: Cambria
font.name.serif.x-cyrillic: Cambria
font.name.serif.x-unicode: Cambria
font.name.serif.x-western: Cambria
font.size.fixed.el: 14
font.size.fixed.tr: 14
font.size.fixed.x-baltic: 14
font.size.fixed.x-central-euro: 14
font.size.fixed.x-cyrillic: 14
font.size.fixed.x-unicode: 14
font.size.fixed.x-western: 14
font.size.variable.el: 17
font.size.variable.tr: 17
font.size.variable.x-baltic: 17
font.size.variable.x-central-euro: 17
font.size.variable.x-cyrillic: 17
font.size.variable.x-unicode: 17
font.size.variable.x-western: 17
gfx.blacklist.suggested-driver-version: 257.21
gfx.direct3d.last_used_feature_level_idx: 0
javascript.enabled: false
mail.openMessageBehavior.version: 1
mail.winsearch.firstRunDone: true
mailnews.database.global.datastore.id: 2ebc1e32-6c62-4862-80a7-0339f20288a
mailnews.database.global.indexer.enabled: false
media.gmp.storage.version.observed: 1
network.cookie.prefsMigrated: true
network.predictor.cleaned-up: true
places.database.lastMaintenance: 1532807965
places.history.expiration.transient_current_max_pages: 122334
plugin.importedState: true
plugins.update.notifyUser: true
security.disable_button.openDeviceManager: false
security.sandbox.content.tempDirSuffix: {911920db-e1a6-4611-bb94-67f8fe147547}
Graphics
GPU #1
Description: NVIDIA GeForce GTX 660 Ti
Vendor ID: 0x10de
Device ID: 0x1183
RAM: 2048
Drivers: C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumdx.dll C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c791f781cd94491f\nvldumd.dll
Driver Version: 23.21.13.8831
Driver Date: 11-14-2017
Features
Direct2D: false
DirectWrite: true (10.0.17134.1)
ClearType Parameters: Gamma: 2.2 Pixel Structure: BGR ClearType Level: 0 Enhanced Contrast: 400
WebGL Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 660 Ti Direct3D9Ex vs_3_0 ps_3_0) -- OpenGL ES 2.0 (ANGLE 2.1.0.2a250c8a0e15)
AzureCanvasBackend: skia
AzureCanvasAccelerated: 0
AzureFallbackCanvasBackend: cairo
AzureContentBackend: skia
JavaScript
Incremental GC: 1
Accessibility
Activated: 0 Prevent Accessibility: 0
Library Versions
Expected minimum version
Version in use
NSPR
4.13.1
4.13.1
NSS
3.28.6
3.28.6
NSS Util
3.28.6
3.28.6
NSS SSL
3.28.6
3.28.6
NSS S/MIME
3.28.6
3.28.6
Try to start Windows in safe mode with networking enabled. - Win10 https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode
Still in Windows safe mode, start Thunderbird in safe mode. - https://support.mozilla.org/kb/safe-mode
Does the problem go away?