I just updated upon restarting firefox. I will keep an eye out for further occurrences.

Type about:support<enter> in the address bar.

Under the page logo on the left side, you will see Application Basics. Under this find Profile Folder. To its right press the button Show Folder. This will open your file browser to the current Firefox profile. Now Close Firefox.

Locate the places.sqlite file. Then rename it by adding .old to it. Restart Firefox.

A new places.sqlite file will be created using a bookmarks backup.

Done, anything else?

Is the problem still there?

I'm not certain, the problem only kicks in after using Firefox for a while. I'll have to wait and see

What security software do you have?

Boot the computer in Windows Safe mode with network support to see if that has effect in case security software is causing problems.

• http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/
• http://www.7tutorials.com/4-ways-boot-safe-mode-windows-10

I'm just using windows defender

Hi, the problem started appearing again. It was fixed for a while, but now it's back.

Here's the output of verify integrity: > Task: checkIntegrity - Unable to check favicons.sqlite integrity: [Exception... "Could not open connection to C:\Users\James\AppData\Roaming\Mozilla\Firefox\Profiles\4irft6pp.default-1548316427339\favicons.sqlite: 2153971713" nsresult: "0x80630001 (NS_ERROR_STORAGE_BUSY)" location: "JS frame :: resource://gre/modules/Sqlite.jsm :: openConnection/</< :: line 985" data: no] > Task: invalidateCaches - The task queue was cleared by an error in another task. > Task: checkCoherence - The task queue was cleared by an error in another task. > Task: expire - The task queue was cleared by an error in another task. > Task: originFrecencyStats - The task queue was cleared by an error in another task. > Task: vacuum - The task queue was cleared by an error in another task. > Task: stats - The task queue was cleared by an error in another task. > Task: _refreshUI - The task queue was cleared by an error in another task.

Here are 2 crash reports that should be related to this issue.

bp-c0869e1a-1b49-4cbc-a50c-2792a0190619

bp-3977e855-a79e-4ba0-be84-5f8280190622

Try to clear "offline website data" once in Firefox. Remove the checkmark on all items except "offline website data" and set the time range to "everything".

• History -> "Clear Recent History" (Ctrl+Shift+Delete)
• https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox

jk192564 said

> Task: checkIntegrity - Unable to check favicons.sqlite integrity:

The places.sqlite file contains your History and Bookmarks. And it looks like it is corrupted.

Type about:support<enter> in the address bar.

Under the page logo on the left side, you will see Application Basics. Under this find Profile Folder. To its right press the button Show Folder. This will open your file browser to the current Firefox profile. Now Close Firefox.

Locate the above file. Then rename or delete it. Restart Firefox. The browser should then create a new place.sqlite and recover your bookmarks from the backup files. Note: Your history is not backed up and will be lost.

Product Firefox Release Channel release Version 67.0.2

https://support.mozilla.org/en-US/kb/update-firefox-latest-version?cache=no Did you update Firefox to the latest version 67.0.4 June 20, 2019 Security fixes

FredMcD said Note: Your history is not backed up and will be lost. </blockquote>

Is there any way to backup the history? The history is a feature I use regularly.

jk192564 said

Is there any way to backup the history?

I don't know. Save/move the file to another location. Then post another question asking that.

Creating a new place.sqlite does nothing. Everything still freezes after using for a period of time.

You can look at this NirSoft utility:

• http://www.nirsoft.net/utils/browsing_history_view.html