Can't modify any options
Just installed FF 39.0 on a new build running Win7 Home Premium 64 bit. In FF, Selecting Tools: Options opens the General page in an Options tab. However, I can't change anything on this page nor can I access the Search, Content, Applications, etc. pages.
Solution choisie
Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
- Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
- Do NOT click the Reset button on the Safe Mode start window
- https://support.mozilla.org/kb/Safe+Mode
- https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
If you want to revert changes made to the search bar then you can toggle this pref to false with a middle-click on the about:config page to restore the previously used standalone window to manage the search engines.
- browser.search.showOneOffButtons = false
Close and restart Firefox to make the change effective.
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What exactly happens? Do you see the page below?
If you see it but it looks like different, you could send a screenshot.
Solution choisie
Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
- Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
- Do NOT click the Reset button on the Safe Mode start window
- https://support.mozilla.org/kb/Safe+Mode
- https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
If you want to revert changes made to the search bar then you can toggle this pref to false with a middle-click on the about:config page to restore the previously used standalone window to manage the search engines.
- browser.search.showOneOffButtons = false
Close and restart Firefox to make the change effective.
Banban: Yes, that is what I see but I can't modify anything on that page or select anything from the menu on the left.
cor-el: Everything worked in FF Safe Mode. So in Normal Mode I disabled Add-ons one by one. Turned out to be the Aeon Clouds 7.5 theme. This is odd because on my previous computer with the same OS and FF vers. I had no problems with Aeon Clouds 7.5 .
Thanks for your help!