Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Use CCleaner & turn off message pane

  • 2 replies
  • 2 have this problem
  • 5 views
  • Last reply by Bill00

more options

Another user complained about the message pane being turned on every time he opened Thunderbird. Even though he used F8 to turn it off, he had to do it every time.

The answer was that using Ccleaner messes with Thunderbird settings.

I use Ccleaner and I want to continue to use it. What can I change in Ccleaner (skipping certain files etc.) that will allow me to use it and still have the message pane stay turned off in Thunderbird?

Another user complained about the message pane being turned on every time he opened Thunderbird. Even though he used F8 to turn it off, he had to do it every time. The answer was that using Ccleaner messes with Thunderbird settings. I use Ccleaner and I want to continue to use it. What can I change in Ccleaner (skipping certain files etc.) that will allow me to use it and still have the message pane stay turned off in Thunderbird?

Chosen solution

Turning off Ccleaner for Thunderbird certainly would do it but I'd rather not do that. In answer to a similar question another user posted that file session.json is used by Thunderbird to remember settings from session to session. Ccleaner deletes this file so Thunderbird doesn't remember that the user wants message pane off.

I told Ccleaner to exclude this file. I closed Thunderbird, I ran Ccleaner, and then I reopened Thunderbird and the message pane was gone.

For those of you who wish to use Ccleaner & Thunderbird this seems to fix the F8 message pane issue.

Read this answer in context 👍 1

All Replies (2)

more options

Uncheck all items related to Thunderbird. See attached screenshot.

Modified by christ1

more options

Chosen Solution

Turning off Ccleaner for Thunderbird certainly would do it but I'd rather not do that. In answer to a similar question another user posted that file session.json is used by Thunderbird to remember settings from session to session. Ccleaner deletes this file so Thunderbird doesn't remember that the user wants message pane off.

I told Ccleaner to exclude this file. I closed Thunderbird, I ran Ccleaner, and then I reopened Thunderbird and the message pane was gone.

For those of you who wish to use Ccleaner & Thunderbird this seems to fix the F8 message pane issue.