Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Vanwege onderhoudswerkzaamheden die uw ervaring zouden moeten verbeteren, heeft deze website beperkte functionaliteit. Als een artikel uw probleem niet verhelpt en u een vraag wilt stellen, kan onze ondersteuningsgemeenschap u helpen in @FirefoxSupport op Twitter en /r/firefox op Reddit.

Zoeken in Support

Vermijd ondersteuningsscams. We zullen u nooit vragen een telefoonnummer te bellen, er een sms naar te sturen of persoonlijke gegevens te delen. Meld verdachte activiteit met de optie ‘Misbruik melden’.

Meer info

Deze conversatie is gearchiveerd. Stel een nieuwe vraag als u hulp nodig hebt.

Not possible to download Firefox 44.0 without administrator rights (Windows Vista)

  • 2 antwoorden
  • 1 heeft dit probleem
  • 1 weergave
  • Laatste antwoord van James

more options

There is a strange phenomena in regard to Firefox 44.0 and Windows Vista. If you want to download the “Firefox Setup 44.0.exe"-file using Firefox from the official homepage (https://www.mozilla.org/en-US/firefox/all/) everything works as usual as long as you use Firefox with administrator rights.

But if you use Firefox without administrator rights you are not able to download the current 44.0.exe-file. Instead you can only download the “Firefox Setup 43.0.1.exe". And even then its not possible to update to 44.0 via the build-in update process.

Why is it?

How is Mozilla able to detect if you are surfing with administrator rights or not?

Does Mozilla use any website techniques to do so? This happens even with Javascript deactivated and Java, Flash, etc. not installed.

Or is it a kind of “build-in thing” in Firefox?

There is a strange phenomena in regard to Firefox 44.0 and Windows Vista. If you want to download the “Firefox Setup 44.0.exe"-file using Firefox from the official homepage (https://www.mozilla.org/en-US/firefox/all/) everything works as usual as long as you use Firefox with administrator rights. But if you use Firefox without administrator rights you are not able to download the current 44.0.exe-file. Instead you can only download the “Firefox Setup 43.0.1.exe". And even then its not possible to update to 44.0 via the build-in update process. Why is it? How is Mozilla able to detect if you are surfing with administrator rights or not? Does Mozilla use any website techniques to do so? This happens even with Javascript deactivated and Java, Flash, etc. not installed. Or is it a kind of “build-in thing” in Firefox?

Gekozen oplossing

BLC1456 said

There is a strange phenomena in regard to Firefox 44.0 and Windows Vista. If you want to download the “Firefox Setup 44.0.exe"-file using Firefox from the official homepage (https://www.mozilla.org/en-US/firefox/all/) everything works as usual as long as you use Firefox with administrator rights. But if you use Firefox without administrator rights you are not able to download the current 44.0.exe-file. Instead you can only download the “Firefox Setup 43.0.1.exe". And even then its not possible to update to 44.0 via the build-in update process. Why is it? How is Mozilla able to detect if you are surfing with administrator rights or not? Does Mozilla use any website techniques to do so? This happens even with Javascript deactivated and Java, Flash, etc. not installed. Or is it a kind of “build-in thing” in Firefox?

I wonder if the useragent of the browser you are using while as Admin is different? like saying you are using a newer OS.

If the mozilla.org sites sees you have Windows NT 6.0 which is Vista or Windows NT 5.1 which is WinXP in web browser useragent, then you should get served 43.0.1 instead of 44.0


WinXP users need SP3 to run the 43.0.2 or newer setups. Problem is there is many users still using WinXP SP2 which cannot run the Firefox setups since 43.0.2.

Dit antwoord in context lezen 👍 0

Alle antwoorden (2)

more options

You may be missing the Vista KB2763674 update.

https://support.mozilla.org/en-US/kb/get-latest-version-firefox-windows-xp-vista

That is affecting downloading Firefox 43.0.2 and later for WinXP and Vista, the latter when Vista is lacking the KB2763674 update. WinXP doesn't have that update available.

more options

Gekozen oplossing

BLC1456 said

There is a strange phenomena in regard to Firefox 44.0 and Windows Vista. If you want to download the “Firefox Setup 44.0.exe"-file using Firefox from the official homepage (https://www.mozilla.org/en-US/firefox/all/) everything works as usual as long as you use Firefox with administrator rights. But if you use Firefox without administrator rights you are not able to download the current 44.0.exe-file. Instead you can only download the “Firefox Setup 43.0.1.exe". And even then its not possible to update to 44.0 via the build-in update process. Why is it? How is Mozilla able to detect if you are surfing with administrator rights or not? Does Mozilla use any website techniques to do so? This happens even with Javascript deactivated and Java, Flash, etc. not installed. Or is it a kind of “build-in thing” in Firefox?

I wonder if the useragent of the browser you are using while as Admin is different? like saying you are using a newer OS.

If the mozilla.org sites sees you have Windows NT 6.0 which is Vista or Windows NT 5.1 which is WinXP in web browser useragent, then you should get served 43.0.1 instead of 44.0


WinXP users need SP3 to run the 43.0.2 or newer setups. Problem is there is many users still using WinXP SP2 which cannot run the Firefox setups since 43.0.2.

Bewerkt door James op