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Windows 7: Firefox username editing

17 Sep 2017   #1

Windows 7 Pro 64 bit
Firefox username editing

My Firefox browser is unwell. When logging into websites that I have used before, Firefox shows the username. A few days ago I forgot to move to the password field and keyed the password into the username field. This should not be a problem - highlight or right click on the text that is to be deleted, press delete, and it's gone.

For reasons that are unclear this is no longer possible. I do not know if it's due to a FF upgrade, a Win 7 upgrade, or a bug. I cannot find advice on the Mozilla website about how to fix this; all information I found is dated and refers to old versions.

So it may come down to delving deeper into Win 7 to edit or perhaps delete the file that remembers all the usernames. Advice to resolve this issue would be valued. Thanks.

My System SpecsSystem Spec
18 Sep 2017   #2

Windows 10 Pro 64 bit

Hi Tharwatime, To find Firefox Profiles first go to

Local Disk C


User Name

App Data/Roaming/Mozilla/Firefox/Profiles

In case it is a hidden file, from the start menu, click control panel, type in folder options, view, and

check show hidden,files,folders and drives. Hope this is of some help.
My System SpecsSystem Spec
18 Sep 2017   #3

Windows 7 Pro 64 bit

Ethel, thanks. All I can see in ~ Firefox/Profiles is one folder, ff.default. I've selected show hidden, and nothing else comes up, not even in Total commander. Asking via dir *.* /A:H has nothing either. I'm unsure what to do now. Firefox has been quite good until now. I have should old versions going back years on full backups.
My System SpecsSystem Spec

18 Sep 2017   #4

Windows 10 Pro 64 bit

Hi Again, You may have already looked, but Firefox is also under

App Data/Local/Mozilla/Firefox/Profiles

Local Disk C

Program Files x 86/Mozilla
My System SpecsSystem Spec
18 Sep 2017   #5

Windows 10 Pro 64 bit

Hi again, One more place I just remembered.

In the start menu search box

Type in firefox.exe -P

A box will come up with Profiles, maybe something is there that may help.
My System SpecsSystem Spec
18 Sep 2017   #6

Windows 7 Pro 64 bit

This is ~Mozilla\Firefox\profiles.ini



It was last altered in June 2016. I cannot see what to do here. The folder ~ff.default has about 20 folders and 50 files, some recent. I cannot identify any as being germane to editing the FF settings.
My System SpecsSystem Spec
18 Sep 2017   #7

Windows 10 Pro 64 bit

Hi again, Have you tried under the Firefox menu, click options and up the top you see about preferences,

change this to about profiles, and see what is listed there.
My System SpecsSystem Spec
18 Sep 2017   #8

W7 Ultimate SP1, LM18.3 MATE, W10 Home, #All 64 bit
Saved Logins

Have you looked in "Saved Logins"?
Firefox username editing-ff-saved-logins.jpg

My System SpecsSystem Spec
22 Sep 2017   #9

Win 7 Ultimate 64-bit

There's a file logins.json in your profile that hold all your logins, and I tried opening it with Firefox.exe but it won''t. You can try opening it in Notepad.
My System SpecsSystem Spec
24 Sep 2017   #10

Windows 7 Pro 64 bit

Competing priorites of late.

I found ~ff.default\logins.json, which says
I cannot see how this relates to a Firefox login

Advice above says to go "Firefox menu, click options and up the top you see about preferences". This brings up a screen called General, with a list at the left General, Search, Content and five others. There is no "about preferences".

I cannot see from the screen shot where Saved logins is located, and it does not come up on a search from the start button or the command line.

It's hard to know what to do next.
My System SpecsSystem Spec

 Firefox username editing

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