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

After win7 upgrade to win10 Thunderbird stopped connecting to server

  • 4 replies
  • 3 have this problem
  • 2 views
  • Last reply by dlritter

more options

All mail folders and contents are intact. However, nothing in or out. TB does work in a fresh install of win10. However, in the upgraded version, no TB seems to have no access to the network layer much less an email server. The Windows FW IS turned off. If we can fix this we also might fix FireFox (IE11) which also has no network access. Edge and Chrome function.

 Application Basics
   Name: Thunderbird
   Version: 38.1.0
   User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0
   Profile Folder: Show Folder
             (Local drive)
   Application Build ID: 20150707103124
   Enabled Plugins: about:plugins
   Build Configuration: about:buildconfig
   Memory Use: about:memory
 Mail and News Accounts
   account1:
     INCOMING: account1, , (pop3) inbound.att.net:995, SSL, passwordCleartext
     OUTGOING: smtp.mail.att.net:587, SSL, passwordCleartext, true
   account2:
     INCOMING: account2, , (none) Local Folders, plain, passwordCleartext
   account3:
     INCOMING: account3, , (pop3) pop.att.yahoo.com:995, SSL, passwordCleartext
     OUTGOING: smtp.mail.att.net:587, SSL, passwordCleartext, true
 Crash Reports
 Extensions
   Lightning, 4.0.1, false, {e2fda1a4-762b-4020-b5ad-a41df1933103}
 Important Modified Preferences
   Name: Value
     browser.cache.disk.capacity: 358400
     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: 38.1.0
     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.direct3d.last_used_feature_level_idx: 0
     mail.openMessageBehavior.version: 1
     mail.winsearch.firstRunDone: true
     mailnews.database.global.datastore.id: 9bb42e05-511e-4758-b9f8-dcd43b0481f
     mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false…
     network.cookie.prefsMigrated: true
     network.predictor.cleaned-up: true
     places.database.lastMaintenance: 1438053971
     places.history.expiration.transient_current_max_pages: 104858
     plugin.importedState: true
     plugin.state.flash: 0
     print.printer_Brother_HL-5250DN_series.print_bgcolor: false
     print.printer_Brother_HL-5250DN_series.print_bgimages: false
     print.printer_Brother_HL-5250DN_series.print_colorspace:
     print.printer_Brother_HL-5250DN_series.print_command:
     print.printer_Brother_HL-5250DN_series.print_downloadfonts: false
     print.printer_Brother_HL-5250DN_series.print_duplex: 0
     print.printer_Brother_HL-5250DN_series.print_edge_bottom: 0
     print.printer_Brother_HL-5250DN_series.print_edge_left: 0
     print.printer_Brother_HL-5250DN_series.print_edge_right: 0
     print.printer_Brother_HL-5250DN_series.print_edge_top: 0
     print.printer_Brother_HL-5250DN_series.print_evenpages: true
     print.printer_Brother_HL-5250DN_series.print_footercenter:
     print.printer_Brother_HL-5250DN_series.print_footerleft: &PT
     print.printer_Brother_HL-5250DN_series.print_footerright: &D
     print.printer_Brother_HL-5250DN_series.print_headercenter:
     print.printer_Brother_HL-5250DN_series.print_headerleft: &T
     print.printer_Brother_HL-5250DN_series.print_headerright: &U
     print.printer_Brother_HL-5250DN_series.print_in_color: true
     print.printer_Brother_HL-5250DN_series.print_margin_bottom: 0.5
     print.printer_Brother_HL-5250DN_series.print_margin_left: 0.5
     print.printer_Brother_HL-5250DN_series.print_margin_right: 0.5
     print.printer_Brother_HL-5250DN_series.print_margin_top: 0.5
     print.printer_Brother_HL-5250DN_series.print_oddpages: true
     print.printer_Brother_HL-5250DN_series.print_orientation: 0
     print.printer_Brother_HL-5250DN_series.print_page_delay: 50
     print.printer_Brother_HL-5250DN_series.print_paper_data: 1
     print.printer_Brother_HL-5250DN_series.print_paper_height: 11.00
     print.printer_Brother_HL-5250DN_series.print_paper_name:
     print.printer_Brother_HL-5250DN_series.print_paper_size_type: 0
     print.printer_Brother_HL-5250DN_series.print_paper_size_unit: 0
     print.printer_Brother_HL-5250DN_series.print_paper_width: 8.50
     print.printer_Brother_HL-5250DN_series.print_plex_name:
     print.printer_Brother_HL-5250DN_series.print_resolution: 0
     print.printer_Brother_HL-5250DN_series.print_resolution_name:
     print.printer_Brother_HL-5250DN_series.print_reversed: false
     print.printer_Brother_HL-5250DN_series.print_scaling: 1.00
     print.printer_Brother_HL-5250DN_series.print_shrink_to_fit: true
     print.printer_Brother_HL-5250DN_series.print_to_file: false
     print.printer_Brother_HL-5250DN_series.print_unwriteable_margin_bottom: 0
     print.printer_Brother_HL-5250DN_series.print_unwriteable_margin_left: 0
     print.printer_Brother_HL-5250DN_series.print_unwriteable_margin_right: 0
     print.printer_Brother_HL-5250DN_series.print_unwriteable_margin_top: 0
 Graphics
     Adapter Description: AMD Radeon HD 6670
     Vendor ID: 0x1002
     Device ID: 0x6758
     Adapter RAM: 2048
     Adapter Drivers: aticfx64 aticfx64 aticfx64 amdxc64 aticfx32 aticfx32 aticfx32 amdxc32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64
     Driver Version: 15.200.1046.2
     Driver Date: 7-15-2015
     Direct2D Enabled: true
     DirectWrite Enabled: true (10.0.10240.16390)
     ClearType Parameters: ClearType parameters not found
     WebGL Renderer: false
     GPU Accelerated Windows: 1/1 Direct3D 11
     AzureCanvasBackend: direct2d 1.1
     AzureSkiaAccelerated: 0
     AzureFallbackCanvasBackend: cairo
     AzureContentBackend: direct2d 1.1
 JavaScript
 Incremental GC: 1
 Accessibility
   Activated: 0
   Prevent Accessibility: 0
 Library Versions
     Expected minimum version
     Version in use
     NSPR
     4.10.8
     4.10.8
     NSS
     3.19.2 Basic ECC
     3.19.2 Basic ECC
     NSS Util
     3.19.2
     3.19.2
     NSS SSL
     3.19.2 Basic ECC
     3.19.2 Basic ECC
     NSS S/MIME
     3.19.2 Basic ECC
     3.19.2 Basic ECC
All mail folders and contents are intact. However, nothing in or out. TB does work in a fresh install of win10. However, in the upgraded version, no TB seems to have no access to the network layer much less an email server. The Windows FW IS turned off. If we can fix this we also might fix FireFox (IE11) which also has no network access. Edge and Chrome function. Application Basics Name: Thunderbird Version: 38.1.0 User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 Profile Folder: Show Folder (Local drive) Application Build ID: 20150707103124 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Mail and News Accounts account1: INCOMING: account1, , (pop3) inbound.att.net:995, SSL, passwordCleartext OUTGOING: smtp.mail.att.net:587, SSL, passwordCleartext, true account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext account3: INCOMING: account3, , (pop3) pop.att.yahoo.com:995, SSL, passwordCleartext OUTGOING: smtp.mail.att.net:587, SSL, passwordCleartext, true Crash Reports Extensions Lightning, 4.0.1, false, {e2fda1a4-762b-4020-b5ad-a41df1933103} Important Modified Preferences Name: Value browser.cache.disk.capacity: 358400 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: 38.1.0 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.direct3d.last_used_feature_level_idx: 0 mail.openMessageBehavior.version: 1 mail.winsearch.firstRunDone: true mailnews.database.global.datastore.id: 9bb42e05-511e-4758-b9f8-dcd43b0481f mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false… network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1438053971 places.history.expiration.transient_current_max_pages: 104858 plugin.importedState: true plugin.state.flash: 0 print.printer_Brother_HL-5250DN_series.print_bgcolor: false print.printer_Brother_HL-5250DN_series.print_bgimages: false print.printer_Brother_HL-5250DN_series.print_colorspace: print.printer_Brother_HL-5250DN_series.print_command: print.printer_Brother_HL-5250DN_series.print_downloadfonts: false print.printer_Brother_HL-5250DN_series.print_duplex: 0 print.printer_Brother_HL-5250DN_series.print_edge_bottom: 0 print.printer_Brother_HL-5250DN_series.print_edge_left: 0 print.printer_Brother_HL-5250DN_series.print_edge_right: 0 print.printer_Brother_HL-5250DN_series.print_edge_top: 0 print.printer_Brother_HL-5250DN_series.print_evenpages: true print.printer_Brother_HL-5250DN_series.print_footercenter: print.printer_Brother_HL-5250DN_series.print_footerleft: &PT print.printer_Brother_HL-5250DN_series.print_footerright: &D print.printer_Brother_HL-5250DN_series.print_headercenter: print.printer_Brother_HL-5250DN_series.print_headerleft: &T print.printer_Brother_HL-5250DN_series.print_headerright: &U print.printer_Brother_HL-5250DN_series.print_in_color: true print.printer_Brother_HL-5250DN_series.print_margin_bottom: 0.5 print.printer_Brother_HL-5250DN_series.print_margin_left: 0.5 print.printer_Brother_HL-5250DN_series.print_margin_right: 0.5 print.printer_Brother_HL-5250DN_series.print_margin_top: 0.5 print.printer_Brother_HL-5250DN_series.print_oddpages: true print.printer_Brother_HL-5250DN_series.print_orientation: 0 print.printer_Brother_HL-5250DN_series.print_page_delay: 50 print.printer_Brother_HL-5250DN_series.print_paper_data: 1 print.printer_Brother_HL-5250DN_series.print_paper_height: 11.00 print.printer_Brother_HL-5250DN_series.print_paper_name: print.printer_Brother_HL-5250DN_series.print_paper_size_type: 0 print.printer_Brother_HL-5250DN_series.print_paper_size_unit: 0 print.printer_Brother_HL-5250DN_series.print_paper_width: 8.50 print.printer_Brother_HL-5250DN_series.print_plex_name: print.printer_Brother_HL-5250DN_series.print_resolution: 0 print.printer_Brother_HL-5250DN_series.print_resolution_name: print.printer_Brother_HL-5250DN_series.print_reversed: false print.printer_Brother_HL-5250DN_series.print_scaling: 1.00 print.printer_Brother_HL-5250DN_series.print_shrink_to_fit: true print.printer_Brother_HL-5250DN_series.print_to_file: false print.printer_Brother_HL-5250DN_series.print_unwriteable_margin_bottom: 0 print.printer_Brother_HL-5250DN_series.print_unwriteable_margin_left: 0 print.printer_Brother_HL-5250DN_series.print_unwriteable_margin_right: 0 print.printer_Brother_HL-5250DN_series.print_unwriteable_margin_top: 0 Graphics Adapter Description: AMD Radeon HD 6670 Vendor ID: 0x1002 Device ID: 0x6758 Adapter RAM: 2048 Adapter Drivers: aticfx64 aticfx64 aticfx64 amdxc64 aticfx32 aticfx32 aticfx32 amdxc32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64 Driver Version: 15.200.1046.2 Driver Date: 7-15-2015 Direct2D Enabled: true DirectWrite Enabled: true (10.0.10240.16390) ClearType Parameters: ClearType parameters not found WebGL Renderer: false GPU Accelerated Windows: 1/1 Direct3D 11 AzureCanvasBackend: direct2d 1.1 AzureSkiaAccelerated: 0 AzureFallbackCanvasBackend: cairo AzureContentBackend: direct2d 1.1 JavaScript Incremental GC: 1 Accessibility Activated: 0 Prevent Accessibility: 0 Library Versions Expected minimum version Version in use NSPR 4.10.8 4.10.8 NSS 3.19.2 Basic ECC 3.19.2 Basic ECC NSS Util 3.19.2 3.19.2 NSS SSL 3.19.2 Basic ECC 3.19.2 Basic ECC NSS S/MIME 3.19.2 Basic ECC 3.19.2 Basic ECC

Chosen solution

Please start *Windows'* safe mode with networking enabled.

Still In Windows safe mode, start thunderbird in safe mode - http://support.mozillamessaging.com/en-US/kb/safe-mode

Does problem go away?

Read this answer in context 👍 0

All Replies (4)

more options

Chosen Solution

Please start *Windows'* safe mode with networking enabled.

Still In Windows safe mode, start thunderbird in safe mode - http://support.mozillamessaging.com/en-US/kb/safe-mode

Does problem go away?

more options

Did not try Safe Mode.. hijackthis revealed that SpeedBit Video Accelerator had 6 or more LSP entries for the same file. LSPfix unable to repair but supprise when I uninstalled the app the entire stack cleaned up. upon reboot, Bing changed my wallpaper and all things were well. I knew the issue was not a mozilla thing since FF and TB worked in the clean install hunting for diagnostic suggestions. Thank You

more options

Perhaps relevant to this problem, someone informed me that on win10 "the network adapter needs to be reset on some upgrades to allow programs other than Edge internet access. It is a command line process that is fixed, as I understand it, in this weeks roll up for Windows 10. ... look for this week's Windows 10 fixes."

Please tell us, does this help?

more options

Um, I guess I forgot to tag 'solved' on my last post.. about removing all the extra (bogus) LSP links that were installed by various instals of Speedbit video accelerator..

Thank you..