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Profile mismatch: active profile directory empty, but history and extensions in inactive profile directory

I've been using the extension "Tree Style Tab" and "TST Colored Tabs." I've been looking for a way to disable the native Firefox tab bar, whether on top of the window or … (kàsi)

I've been using the extension "Tree Style Tab" and "TST Colored Tabs." I've been looking for a way to disable the native Firefox tab bar, whether on top of the window or to the left side. I haven't been successful on my own.

After a couple of hours troubleshooting this with CoPilot, It suggested I post the following short summary:

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Firefox 152.0.6 (64-bit) about:profiles shows active profile: C:\Users\dmerc\AppData\Roaming\Mozilla\Firefox\Profiles\usm8kxcr.default-release

Opening that directory from about:support shows an empty folder.

profiles.ini references: agwp164m.default-release

userChrome.css loads correctly in a separate profile but not in the profile containing my current extensions and history.

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The details of how it came to this conclusion:

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Based on everything you've found:

The profile with your current extensions and recent history is reported as: usm8kxcr.default-release

Opening that profile folder shows an empty directory. The only other real profile on disk is: agwp164m.default-release

We successfully proved userChrome.css loads in a different test profile (Profile 1) because the toolbar turned red. Therefore, the CSS mechanism itself works on your machine.

My conclusion is that your Firefox profile registration has become inconsistent. Firefox appears to be using a profile that does not correspond cleanly to the profile folders you're seeing in Explorer. At this point I would:

Back up the entire folder: (NOTE: DONE - backed to to another drive) C:\Users\dmerc\AppData\Roaming\Mozilla\Firefox

Keep using the profile that contains your extensions and recent history. Avoid deleting any profiles or profile folders.

Post the details you've collected to either: the Mozilla Support forum, or r/firefox

The key facts to provide are: Firefox 152.0.6 (64-bit)about:profiles shows active profile: C:\Users\dmerc\AppData\Roaming\Mozilla\Firefox\Profiles\usm8kxcr.default-release.

Opening that directory from about:support shows an empty folder.

profiles.ini references: agwp164m.default-release

userChrome.css loads correctly in a separate profile but not in the profile containing my current extensions and history. \ Those facts point to a profile-management issue rather than a Tree Style Tab or CSS issue.

The good news is that your current extensions and recent history are still accessible, so this doesn't look like data loss. The profile mapping itself needs to be untangled before custom CSS can reliably be applied.

=

It also suggested not copying any folders and files between profiles for now.

Solved 1

Within the last two days I am unable to log on to my TastyTrade account. I can log on with Edge but not Firefox

I have had access to TastyTrade thru FireFox for years. Within the last two days I am unable to log on. When I click on the link the screen goes all white and the page … (kàsi)

I have had access to TastyTrade thru FireFox for years. Within the last two days I am unable to log on. When I click on the link the screen goes all white and the page will not open. When using Edge I am able to get logged in but not thru FireFox which is my preferred browser.

Open 1

saved payment methods not showing within settings

saved payment method still work and autofill when a payment page is up but managing all saved payments within settings is impossible as the list is not populated - please… (kàsi)

saved payment method still work and autofill when a payment page is up but managing all saved payments within settings is impossible as the list is not populated - please see screenshot link text

Solved 4 49

Delete Credit Card info

I have five old expired CC's that pop up every time for auto fill. However, when I follow the link, to Manage Payment Methods. It is completely empty. There's nothing to … (kàsi)

I have five old expired CC's that pop up every time for auto fill. However, when I follow the link, to Manage Payment Methods. It is completely empty. There's nothing to manage. How do I delete all the old stuff when there's nothing were it should be? Please see attached.

Solved 3 30

Manage payment methods list missing

I have several saved cards in 152.0.1 (64-bit). When on a payment site the drop-down list shows up as expected, so the extensions.formautofill.creditCards.supportedCount… (kàsi)

I have several saved cards in 152.0.1 (64-bit). When on a payment site the drop-down list shows up as expected, so the extensions.formautofill.creditCards.supportedCountries is correct and working (GB). Also address filling still works, as does saved passwords,

However if I try to "Manage payment methods" the resulting list in "about:preferences#managePayments" is blank. (see image)

I have tried toggling on and off "save & autofill" and restarting, but nothing helps.

Adding a new card works, and the new card appears in the drop-down list on a payment form, but still nothing appears to edit or remove in the settings. How an I edit this list?

PS: I have disabled ALL extensions.

Solved 11 40

Under settings -> passwords and autofill -> manage payment methods, my saved payment methods are gone, and it refuses to save new ones.

The summary says it all. Some time in the pas few days, my saved payment methods disappeared. If I try to use Add new payment method, enter my information and then save… (kàsi)

The summary says it all. Some time in the pas few days, my saved payment methods disappeared. If I try to use Add new payment method, enter my information and then save, the same things happens. It just disappears as if I hadn't done anything. Any suggestions on why it's suddenly refusing to remember my payment info?

Open 2 30

Possible Firefox Sync bookmark data loss after adding new device

Subject: Firefox Sync appears to have erased all bookmarks after setting up a new Windows installation Hello Mozilla Support, I believe I have encountered a Firefox Sync … (kàsi)

Subject: Firefox Sync appears to have erased all bookmarks after setting up a new Windows installation

Hello Mozilla Support,

I believe I have encountered a Firefox Sync issue that resulted in the loss of my entire bookmarks collection.

Here is exactly what happened:

I have been using Firefox Sync for several years without any issues. This was not my first Windows reinstallation. I have restored Firefox through Sync multiple times before. Firefox Sync had always synchronized bookmarks, passwords, history, extensions and open tabs correctly across my Windows PC and Android phone. I had approximately 350 bookmarks, organized into folders. Timeline Yesterday I performed a clean installation of Windows 11. I installed Firefox 152.0.5 (64-bit). I signed into my existing Firefox Account. I did not immediately enable Sync, so nothing was synchronized at that point. Today I enabled Sync and waited for the synchronization to complete. Passwords synchronized successfully. Browsing history synchronized successfully (it took a little longer). Extensions were restored successfully. Bookmarks never appeared.

Immediately after noticing this, I checked Firefox on my Android phone.

At first, one of the bookmark folders still showed that it contained more than 300 items (I saw the item count), but when I opened the folder it was completely empty. After synchronization finished, all bookmarks disappeared from both devices.

Additional information Browsing history is still present. Saved passwords are still present. Extensions are still present. Open tabs synchronization continues to work. Bookmark synchronization is enabled. I am signed into the correct Firefox Account. The second local Firefox profile is empty. The automatic bookmark backup now contains only the current state (7 items), indicating that the original backup has already been overwritten. The current profile contains both places.sqlite and places.sqlite-wal. The only Sync error log is related to a temporary DNS lookup failure (NS_ERROR_UNKNOWN_HOST) and contains no bookmark synchronization errors.

Because history, passwords and extensions synchronized correctly, this does not appear to be an account or authentication problem.

What concerns me most is that I briefly saw the bookmark folder still reporting over 300 items on Android before it became empty. This makes me suspect that something went wrong during bookmark synchronization rather than the bookmarks simply never existing on the server.

Could you please advise:

Is there any server-side recovery or investigation that can be performed for Firefox Sync bookmark data? Are there any diagnostic logs that I can provide? Is this a known issue with Firefox Sync after connecting a newly installed device?

I would greatly appreciate any assistance, as this bookmark collection had been accumulated over many years.

I have a Sync error log available: error-sync-1783454370913.txt

It only contains a DNS error related to tabs synchronization: NS_ERROR_UNKNOWN_HOST

There are no bookmark-related errors in the log.

Thank you.

Open 3 29

McAfee antivirus has taken over part of Firefox. I had it a year ago but use Eset. How to get rid of it??

I get the following pop ups, the blue-green ones in images. When I click "CANCEL" I get the McAfee window shown. Can't find where the popups are coming from. I was abl… (kàsi)

I get the following pop ups, the blue-green ones in images. When I click "CANCEL" I get the McAfee window shown. Can't find where the popups are coming from. I was able to get rid of on another computer by uninstalling Firefox, but lost stuff. I use ESet now and wouldn't go near McAfee again. Does anyone know how to get rid of this?

Beware of McAfee!!!! They act like crooks!!!

Solved 2

Firefox VPN stopped working and now just gives me an infinite Get Started Sign in Loop.

The built in VPN worked great for me for a couple of months, but now whenever I try to turn it on, it starts with the "Get Started" screen, which takes me to a page to co… (kàsi)

The built in VPN worked great for me for a couple of months, but now whenever I try to turn it on, it starts with the "Get Started" screen, which takes me to a page to confirm my account. When I press continue the VPN button just goes back to the "Get Started" screen & the loop repeats. I've tried signing out & refreshing my Firefox installation but I keep getting the same result. Before it started doing this the button to turn on the VPN was appearing but would not react to clicks.

Open 1 39

address menu bar move extensions to overflow - july 2026

Hello: w11p laptop. FF dev 153.0b.11 (12july). The overflow option for the menu bar containing the address field does not let me move extensions icons from the "always … (kàsi)

Hello: w11p laptop. FF dev 153.0b.11 (12july). The overflow option for the menu bar containing the address field does not let me move extensions icons from the "always view" choice to the overflow. I have already looked at "extensions & themes dropdown. I have already viewed possible answers here & the worst one says: "NO." That is, this used to be a useable item, but w/changes, no go. I have a 18 in /45cm (only) monitor & don't use FF full screen hardly ever, just 1/2 is enuf. Any solutions/add-ons for a workaround so I can see more than 1/2 in of address field (when the whole browser window is 6 in total)? Tx.

Solved 2

In the last month I started getting `Secure Connection Failed` messages on many sites that I access without problem with my other browsers

In this case I accessed my Acer account and clicked on my notebook. I then got the screen shown in the image. I could access the page with Opera, Chrome, and Edge. This i… (kàsi)

In this case I accessed my Acer account and clicked on my notebook. I then got the screen shown in the image. I could access the page with Opera, Chrome, and Edge.

This is happening a lot, and is rendering Firefox unusable as my default browser.

Open 3

Why can't I remove the FIREFOX logo from my home page this happened after the latest update, I have all toggles off and been on about:congig and put the relevant tabs to false. Low and behold the round Firefox logo is still present blighting my wallpaper

Hi after the 152.0.6 Firefox update I cannot get rid of the round Firefox logo on my home screen and new tabs. I have this toggled off in settings and toggled false in ab… (kàsi)

Hi after the 152.0.6 Firefox update I cannot get rid of the round Firefox logo on my home screen and new tabs. I have this toggled off in settings and toggled false in about:config. Why aren't these updates tested before release to the public

Open 4