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

Getting duplicated messages with Outlook account

  • 5 replies
  • 1 has this problem
  • 1 view
  • Last reply by yesyves

more options

Some messages get duplicated in my outlook.office365.com Inbox. They both have the same date, time and content.

Deleting them deletes only one of them while the other becomes an empty message marked as received on December 31st 1969 at 7:00 PM.

Quitting and restarting TB make the duplicate / empty message disappear.

While this duplication is not very frequent, maybe 1 in 50, the following behaviour is constant. This has never happened in my Gmail Inbox. The duplicates appear only in TB, not in the Outlook web client. I have been using TB since a week or two.

MacOS 14.1 / 14.1.2 TB 115.5.1

Thanks !

Some messages get duplicated in my outlook.office365.com Inbox. They both have the same date, time and content. Deleting them deletes only one of them while the other becomes an empty message marked as received on December 31st 1969 at 7:00 PM. Quitting and restarting TB make the duplicate / empty message disappear. While this duplication is not very frequent, maybe 1 in 50, the following behaviour is constant. This has never happened in my Gmail Inbox. The duplicates appear only in TB, not in the Outlook web client. I have been using TB since a week or two. MacOS 14.1 / 14.1.2 TB 115.5.1 Thanks !
Attached screenshots

All Replies (5)

more options

I have over 4 million messages in my junkbox from duplications. I hope there's an answer to this

more options

This is a different problem I believe, because duplicates just disappear when TB is shut down and relaunched. They don't go in the trash.

more options

yesyves said

This is a different problem I believe, because duplicates just disappear when TB is shut down and relaunched. They don't go in the trash.

Right click the folder, select properties and then the repair button. If the issue is indexing that should fix it.

more options

Thanks for the tip ! I'll try it next time it happens.

more options

Hi

The repair button did nothing good, either before or after trying to delete the message and ending up with an empty message from 1969. In fact, I ended up with every message in the thread duplicated and these duplicates messed up other threads ...

Quitting and relaunching TB still cleaned everything up !

However, it may be interesting to note that this happened in the same thread as the last time.