Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, see this article.

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

"The bookmarks and history system will not be functional" because one of Firefox's files is in use by another application. I cannot fix this problem.

more options

I must have done something to mess this up,can someone help me fix this, cannot bookmark. I have used Firfox for many years. Thank you. Joe Daraio email- [edited email from public community support forum]

I must have done something to mess this up,can someone help me fix this, cannot bookmark. I have used Firfox for many years. Thank you. Joe Daraio email- [edited email from public community support forum]

Modified by James (doing minimal support)

All Replies (1)

more options

Hi Joe, I assume you already tried a normal shutdown/restart of Windows? That is typically the easiest way to release a file lock.

There also is a support article for that message: Fix "The bookmarks and history system will not be functional" error message.

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.