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

Thunderbird error since update

  • 2 replies
  • 2 have this problem
  • 3 views
  • Last reply by pcatvs

more options

Thunderbird error since update that platform version 78.10.0 not compatible with 78.9.0

Thunderbird error since update that platform version 78.10.0 not compatible with 78.9.0

Chosen solution

Fixed problem myself. Thunderbird did an update and when restarted came up with the error posted. Searching files found that the file xul.dll had been updated that day. Went to my backups and copied the file to the thunderbird directory and program started without a problem. Issue resolved for now.

Read this answer in context 👍 0

All Replies (2)

more options

As I updated from 78.9 to 78.10 without any issues at all, I think you will need to explain what you are wanting to express as I and I wold guess others have nothing but a simple restart of Thunderbird in the update process to mark it as having occurred..

more options

Chosen Solution

Fixed problem myself. Thunderbird did an update and when restarted came up with the error posted. Searching files found that the file xul.dll had been updated that day. Went to my backups and copied the file to the thunderbird directory and program started without a problem. Issue resolved for now.