Hi Laura

Does this happen on this forum website as well?

Are you possibly zooming the page in case the screen dimensions are causing this?

Did you check the connection settings?

• Options/Preferences -> General -> Network: Connection -> Settings

If you do not need to use a proxy to connect to internet then try to select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":

• https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can

Your user agent is normal for Firefox 58 on Windows 10, so that shouldn't be the problem.

• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0

I changed it to no proxy, but it didn't have much effect. I don't think it happens with all websites (I don't think it's happening with this one), but the important ones I need for work are definitely opening in mobile format, and it's driving me crazy.

I'm not zooming anything as far as I can tell. Everything's the same size, it's just in mobile format and the menus are impossible to navigate.

Can you post some links to websites where this happens?

You can also check network.http.* prefs on the about:config page to see if some are user set (bold). You can reset user set (bold) pref(s) via the right-click context menu to the default value.

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

• http://kb.mozillazine.org/about:config

It's happening on our homepage, here: https://www.sdsmt.edu/

To clarify, I should reset everything that's listed as bold? There's nothing about that in the article you linked to it. Will that make any other changes I don't want it to?

What network.http prefs show bold if any?

For me all network.http prefs show as default (i.e. not bold).

There are @media rules on that web page that make the desktop version visible with a width of 992px and higher.

@media (min-width: 992px) and (max-width: 1199px)

Other media rules are for:

@media screen and (max-width: 767px)
@media (min-width: 768px) and (max-width: 991px)
@media (min-width: 1200px)

I'm not sure what that means. It worked fine from August to November, then suddenly changed. It's only affecting the firefox on my work computer, not on my home computer, and it looks normal on chrome on my work computer. So, it's something with firefox specifically on my work computer.

There are over 50 in bold when I go to about:config

Are there any other suggestions? It's getting to the point where I can't do any work on this computer.

Hello. I still have this problem. Has any solution been found? Thanks!

Have you tried Refreshing Firefox? Refresh Firefox - reset add-ons and settings

It says that will restore firefox to its default settings. I can't risk doing that since this is my work computer.

It does, because something in your settings is what's causing the issue.

It will save all your personal data (bookmarks, passwords, history, etc.) as well as a copy of all your original settings on your desktop.

Are there any other options that don't require me to risk losing important work things?

What important things are you thinking you will lose?

You can create a new profile, and see if the issue happens there, but that will cause a lot more work

I've done this "put it all in a folder on the desktop" thing before, and it took A LOT of labor and several months to restore everything back to the way it was.

Well, it's likely one of those settings that's causing the problem. You can refresh, or give a complete list of all your modified prefs.

Seriously? That's the only solution after 3 months of working on this? What about all the other things that were suggested above and that I never received responses to?