I am unable to turn on Private Browsing since upgrading the new version. However, on my laptop I am given the option. Both upgrades were done the same day.
In the Tools drop-down menu, the "Start Private Browsing" option is not highlighted, nor does Ctrl/Sft/P turn it on. The laptop allows both.
被采纳的解决方案
Make sure that you do not run Firefox in permanent Private Browsing mode.
To see all History and Cookie settings, choose: Tools > Options > Privacy, choose the setting Firefox will: Use custom settings for history
- Deselect: [ ] "Always use private browsing mode"
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.com/kb/Safe+Mode
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选择的解决方案
Make sure that you do not run Firefox in permanent Private Browsing mode.
To see all History and Cookie settings, choose: Tools > Options > Privacy, choose the setting Firefox will: Use custom settings for history
- Deselect: [ ] "Always use private browsing mode"
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.com/kb/Safe+Mode
由cor-el于修改