Overview: In this tutorial, we will discuss multiple ways to fix Thunderbird cannot dismiss reminders problem. This can be frustrating when it shows again and again, especially when you are dealing with important data. In fact, there are complaints registered where Thunderbird users are unable to remove reminders even after clicking on the Dismiss button.

Also Read: How to Migrate Kmail to Thunderbird?

Table of Contents Hide
  1. Reasons Behind Thunderbird Reminders Problem
  2. Manual Methods to Fix
  3. Disable & Enable Calendars
  4. Troubleshooting Steps
  5. Preventive Measures
  6. Use Professional Solution
  7. Conclusion

Why Thunderbird Unable to Dismiss Reminders?

There could be many reasons why Thunderbird unable to dismiss reminders. Let’s read those points:

  • Due to corrupted calendar cache
  • Incomplete synchronization process
  • If you have damaged reminder database
  • Having outdated version of Thunderbird
  • It is set as Read-only mode
  • Conflicts between Google Calendar & CalDAV
  • Because of Exchange server communication problems
  • Using Faulty Thunderbird profile

Knowing the problem helps you understand how to solve it.

Signs of Thunderbird Reminder Problems

This guide is for you if any of these issues occur:

  • Reminders from Thunderbird keep showing up repeatedly
  • The Dismiss option is not working
  • Reminder appears again when Thunderbird is restarted
  • Snoozed reminders are popping up again
  • Multiple reminders keep showing up
  • Reminders from the Calendar cannot be dismissed
  • Freezes when trying to dismiss reminders in Thunderbird

Manual Ways to Fix Thunderbird Cannot Dismiss Reminders Problem

You can try these 8 fixes to resolve Thunderbird unable to dismiss reminders.

#1. Restart Thunderbird

Sometimes, temporary errors will cause issues with updating the reminder status.

  • Close the Thunderbird application
  • Next, wait 20-30 seconds
  • Then, reopen your Thunderbird
  • Now, try to close the reminder message

If the thunderbird reminders keep popping up, then proceed to the next method.

#2. Update Thunderbird

It may be because your current Thunderbird version has reminder-related bugs.

  • First, open Thunderbird
  • Next, choose Help > About Thunderbird
  • There you need to check if there are any new updates
  • Then, restart the software again

Updating can also fix Thunderbird cannot dismiss reminders issues with proper synchronization.

#3. Synchronize Calendar

If Thunderbird fails to connect with the calendar server, then dismissed reminders will not synchronize.

  • Right-click on the calendar
  • Go to Properties
  • Check the calendar URL
  • Refresh the calendar
  • Check the Internet connection

If the synchronization was successful, then the reminder status will be updated.

#4. Check Calendar Permissions

Some of your calendars may be set to read-only. If there is no option to edit your calendar, then Thunderbird will not be able to save the dismissed reminder.

Just verify these factors:

  • Permissions tab
  • Account credentials
  • Ownership status of the calendar files
  • Settings for shared calendar

You should allow permissions for writing and dismiss the reminder one more time.

#5. Clear Thunderbird Calendar Cache

Corrupted cache files can often lead to reminder issues.

  • Close your Thunderbird first
  • Go to the Thunderbird profile folder
  • Find the calendar cache files
  • If there is any, remove the cache
  • Relaunch Thunderbird

Now, Thunderbird recreates the cache automatically.

#6. Disable & Re-Enable the Calendar

You can fix the calendar link and most often solve the reminder loop.

  • Firstly, turn off the damaged calendar
  • Restart the Thunderbird
  • Next, activate the calendar
  • At last, synchronize the link

This will instantly fix Thunderbird cannot dismiss reminders problem for many users.

#7. Create a New Thunderbird Profile

In case your Thunderbird Profile is corrupt, the reminders may just keep on coming back.

  • Go to Thunderbird Profile Manager
  • Make a new profile
  • Set up your email account
  • Re-add your calendars
  • Just check for reminders

If everything works fine, then it means that your previous profile was corrupt.

#8. Import Your Calendar Data Again

Sometimes, the calendar information can become corrupted during the sync process. If your events are locally stored, then follow these steps:

  • First, backup your entire calendar
  • Next, delete the corrupted files
  • Make a new calendar
  • There, import that old data

This will recreate the reminders and usually fix the notification issues.

Advanced Troubleshooting Steps – 3 Important Factors

Try the following steps if none of the above solutions work:

#1. Disable Add-ons

Sometimes, there are add-ons which may block your calendar notifications.
For that, go to:

  • Add-ons and Themes
  • Disable any newly added extensions
  • Restart Thunderbird

#2. View Error Console Option

In this section, Thunderbird stores calendar error messages.

To access:

  • Tools > Developer Tools > Error Console

Then, search for these errors:

  • CalDAV
  • Authentication
  • Database
  • Reminder processing

Note that the above errors might point to the same issue.

#3. Re-Sync Your Calendar

When you are using any of these apps:

  • Google Calendar
  • Nextcloud
  • iCloud
  • Exchange
  • CalDAV

You need to unsync and resync the connected calendar. Then, your Thunderbird will have to reconstruct the sync data.

How to Prevent Thunderbird Cannot Dismiss Reminders Problem?

These are some of the practices which you can follow to minimize Thunderbird reminders issues.

  • Keep your Thunderbird up-to-date
  • Do not close it forcefully
  • Backup your Thunderbird profiles
  • Maintain constant internet connectivity while syncing the calendar
  • Check the permission of the calendar in case you change the account
  • Delete duplicate calendars data
  • Refresh your synced calendars once a week

Expert Way to Protect Thunderbird Data During Migration

Sometimes, your Thunderbird cannot dismiss reminders problem can be due to the Thunderbird profile or corruption of mailbox information. The safest option is to move to a new Thunderbird profile, new computer, or even to a different email client. It is crucial to protect your emails and ensure complete migration. So, you can go with SysTools Thunderbird Import Wizard. The software can easily import all your data into Thunderbird mailboxes without changing any email properties, attachments, folders, and metadata. It guarantees that your data will be safely migrated throughout the process.

Key Features:

  • It maintains the same folder hierarchy throughout the process
  • You can import data from Subject, From, To, Cc, Bcc, Date, & Attachments
  • Software can handle even large MBOX file with ease
  • It is very user-friendly, and no need for any technical skills
  • Low chances of duplicate and missing emails
  • Compatible with the latest Thunderbird versions

Conclusion

We have described all the possible reasons behind Thunderbird cannot dismiss reminders problem. Furthermore, we discussed different manual methods to fix the reminder issue. For those who are looking to move their Thunderbird profile into another email client, you can use our professional solution for this. It will save your email messages, attachments, as well as the folder structure in the original format.