Starpage
It's impossible for me to change my startpage. I have changed my startpage by Tools-Options and so I have set my startpage URL. But when I close Firefox and restart it again the old startpage has come back.
Lately my Firefox was upgraded, so now I have to tabs open when I start Firefox. One tab for the startpage(which I can't change) and one tab where it stands: Firefox has been upgraded
Wšykne wótegrona (1)
Try the suggestions at https://support.mozilla.com/en-US/kb/Preferences+are+not+saved
The final set of steps "Corrupt preferences file" should fix your issue.