Administrator on 64-bit Windows 7 Professional unable to open existing Firefox (45.0.1) or install 46.0.1 (with save or run) -- ALL ATTEMPTS produce this pop-up: "A requ… (read more)
Administrator on 64-bit Windows 7 Professional unable to open existing Firefox (45.0.1) or install 46.0.1 (with save or run) -- ALL ATTEMPTS produce this pop-up: "A required privilege is not held by the client."
Version 45.0.1 was working. As I usually do and have done for many versions of Firefox, I downloaded Firefox Setup Stub 46.0.1 with Save rather than Run. However, I could not run it from the download. Firefox was still working. Then I used the Update from inside Firefox (which I presume was the same download), and Firefox has not worked since. I cannot open it with the icon on my taskbar, by using the Start menu, or by clicking on firefox.exe in C:\Program Files (x86)\Mozilla Firefox.
I have spent HOURS searching and reading and trying possible solutions to other problems (not Firefox) where the users had that, or a similar, message. Nothing has worked.
The Securities tab of the Properties of the firefox.exe file shows three "Group or user names" -- SYSTEM, Administrators (with-my-name-here), and Users (with-my-name-again). SYSTEM and Administrators have all "Permissions for Users" allowed (except for "Special permissions" for which neither Allow nor Deny is ticked). Users has ticks to Allow only for "Read & execute" and "Read".
The Advanced Security Settings show me as Administrator as the Owner. I have "Full control" in Permissions (not inherited), and a second entry with me as Administrator also indicates "Full control" (inherited from C:\Program Files (x86)\ for this entry). The SYSTEM entry also has "Full control" (inherited from C:\Program Files (x86)\ . The Users (with-my-name) has a "Read & execute" Permission (inherited from C:\Program Files (x86)\ .
So, I have "Full control".
What does "A required privilege is not held by the client" mean?
Who is the client?
What is the "required privilege"?
And where does one get it?
For a few days I have been receiving pop-ups about updating to a newer version of Thunderbird. Normally I would do so without hesitation (as I have done in the past with Firefox). However, I am now afraid to attempt this in case the same thing happens with Thunderbird and I can't access my emails. At least I can use another browser (as I am obviously doing to post this).
Years ago I used Netscape Navigator (preferred) and Internet Explorer. The first time I used Firefox was at an Internet café on a holiday. I had to learn to use it because it was the only browser on the machines. When I got home, I downloaded Firefox and have been using it ever since. I loved the multiple tabs (which IE did not have at the time). I have IE and Chromodo on my machine, but I only use them for sites that don't work with Firefox (fewer and fewer as the years have gone by).
Can someone help me so that I can return to Firefox? Please?