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Thunderbird calendar disappeared after upgrade to 52.4.0

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After I allowed the upgrade to 54.4, the Calendar is no longer showing on Thunderbird. What's confusing is that if Lighting is packaged with Thunderbird (after V38), I shouldn't have to also add-on Lighting, right?

This is on Windows 7.

Below is the Troubleshooting Information:

 Application Basics
   Name: Thunderbird
   Version: 52.4.0
   User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0
   Profile Folder: Open Folder
             (Local drive)
   Application Build ID: 20171004092449
   Enabled Plugins: about:plugins
   Build Configuration: about:buildconfig
   Memory Use: about:memory
   Profiles: about:profiles
 Mail and News Accounts
   account2:
     INCOMING: account2, , (none) Local Folders, plain, passwordCleartext
   account3:
     INCOMING: account3, , (imap) secure175.inmotionhosting.com:143, alwaysSTARTTLS, passwordCleartext
     OUTGOING: , secure175.inmotionhosting.com:465, SSL, passwordCleartext, true
 Crash Reports
 Extensions
   Provider for Google Calendar, 3.3, true, {a62ef8ec-5fdc-40c2-873c-223b8a6925cc}
   Bitdefender Antispam Toolbar, 7.0, false, bdThunderbird@bitdefender.com
 Important Modified Preferences
   Name: Value
     accessibility.typeaheadfind.flashBar: 0
     browser.cache.disk.capacity: 358400
     browser.cache.disk.filesystem_reported: 1
     extensions.lastAppVersion: 52.4.0
     font.name.monospace.el: 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.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.x-cyrillic: Cambria
     font.name.serif.x-unicode: Cambria
     font.name.serif.x-western: Cambria
     font.size.fixed.el: 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.x-cyrillic: 17
     font.size.variable.x-unicode: 17
     font.size.variable.x-western: 17
     mail.openMessageBehavior.version: 1
     mail.winsearch.firstRunDone: true
     mailnews.database.global.datastore.id: d50e783d-8aa1-446b-9a63-b17819eabb8
     mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false…
     media.gmp.storage.version.observed: 1
     network.cookie.prefsMigrated: true
     network.predictor.cleaned-up: true
     places.database.lastMaintenance: 1507778828
     places.history.expiration.transient_current_max_pages: 122334
     security.sandbox.content.tempDirSuffix: {4bc965e3-a0da-4a6b-9f8c-4306934d2f06}
 Graphics
     GPU #1
     Description: AMD Radeon HD 6600 Series
     Vendor ID: 0x1002
     Device ID: 0x6758
     RAM: 1024
     Drivers: aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64
     Driver Version: 8.850.0.0
     Driver Date: 4-19-2011
     Features
     Direct2D: false
     DirectWrite: true (6.2.9200.22164)
     WebGL Renderer: Google Inc. -- ANGLE (AMD Radeon HD 6600 Series 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
After I allowed the upgrade to 54.4, the Calendar is no longer showing on Thunderbird. What's confusing is that if Lighting is packaged with Thunderbird (after V38), I shouldn't have to also add-on Lighting, right? This is on Windows 7. Below is the Troubleshooting Information: Application Basics Name: Thunderbird Version: 52.4.0 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 Profile Folder: Open Folder (Local drive) Application Build ID: 20171004092449 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Profiles: about:profiles Mail and News Accounts account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext account3: INCOMING: account3, , (imap) secure175.inmotionhosting.com:143, alwaysSTARTTLS, passwordCleartext OUTGOING: , secure175.inmotionhosting.com:465, SSL, passwordCleartext, true Crash Reports Extensions Provider for Google Calendar, 3.3, true, {a62ef8ec-5fdc-40c2-873c-223b8a6925cc} Bitdefender Antispam Toolbar, 7.0, false, bdThunderbird@bitdefender.com Important Modified Preferences Name: Value accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 extensions.lastAppVersion: 52.4.0 font.name.monospace.el: 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.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.x-cyrillic: Cambria font.name.serif.x-unicode: Cambria font.name.serif.x-western: Cambria font.size.fixed.el: 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.x-cyrillic: 17 font.size.variable.x-unicode: 17 font.size.variable.x-western: 17 mail.openMessageBehavior.version: 1 mail.winsearch.firstRunDone: true mailnews.database.global.datastore.id: d50e783d-8aa1-446b-9a63-b17819eabb8 mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false… media.gmp.storage.version.observed: 1 network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1507778828 places.history.expiration.transient_current_max_pages: 122334 security.sandbox.content.tempDirSuffix: {4bc965e3-a0da-4a6b-9f8c-4306934d2f06} Graphics GPU #1 Description: AMD Radeon HD 6600 Series Vendor ID: 0x1002 Device ID: 0x6758 RAM: 1024 Drivers: aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64 Driver Version: 8.850.0.0 Driver Date: 4-19-2011 Features Direct2D: false DirectWrite: true (6.2.9200.22164) WebGL Renderer: Google Inc. -- ANGLE (AMD Radeon HD 6600 Series 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

Chosen solution

The Provider for Google Calendar add-on may be responsible for the disappearance of Lightning. I would re-install Lightning 5.4 directly from the add-on page:

https://addons.mozilla.org/en-US/thunderbird/addon/lightning/

Drag the green 'Download for Windows' button and drop it onto the Tools/Add-ons window in TB.

Read this answer in context 👍 4

All Replies (10)

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Seçilmiş Həll

The Provider for Google Calendar add-on may be responsible for the disappearance of Lightning. I would re-install Lightning 5.4 directly from the add-on page:

https://addons.mozilla.org/en-US/thunderbird/addon/lightning/

Drag the green 'Download for Windows' button and drop it onto the Tools/Add-ons window in TB.

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Yup. After reinstalling Lightning, Calendar reappeared in TB. Thanks very much.

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I've also updated T-Bird and lost my personal calendar, i.e. with birthdays, etc.

Installed Lightning according to your instructions, and have the calendar but not the personal one.

Can you help me find where all that went?

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I was confronted with the same problem today. Amazingly, re-installing thunderbird, lightning and/or all the other add-ons and extensions didn't solve the problem. In the menu, "View -> Calendar -> ..." remained greyed out.

After a while I just clicked the little calendar leaf icon atop the today pane and this immediately opened the calendar tab with all my previously configured calendars. Additionally, the menu option "View -> Calendar" changed from inactive/greyed out to active/black. All calendar functions have been restored.

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Was your calendar 'local' or 'cloud' based? If the latter (e.g. Google or Outlook), the initial absence may have been due to the time delay in synchronizing with the online calendar.

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Thanks to both of you for your replies. After almost three weeks of silence I was afraid that I was just out of luck.

1. My calendar was evidently default to cloud based. (I didn't set it up either way, just started using it - Unless there was an option that I overlooked.) and things still synced with my wife's computer which is using Win Mail. Since it has been a couple of months with no birthdays, etc. it should have synced by now.

2. As Torakamo said, the view > calendar is greyed out. Not sure where you started before finding and clicking the leaf, but I tried all options I had (I think) with no success. Still no birthdays, etc.

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I am having this same issue all of a sudden but I don't even have a grayed out calendar option under 'view'... it's just not there and no sign of my caledar

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Delmond go to the add-on tab in Thunderbird, click Extensions, type lightning in the search box and install. If that does not fix your issue start your own thread for your problem with details. This thread is marked solved.

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I don't see where it's marked solved but thanks anyway

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See the 2nd post marked Chosen Solution? That is solved. Either way forum rules state start your own thread.