Ce site disposera de fonctionnalités limitées pendant que nous effectuons des opérations de maintenance en vue de vous proposer un meilleur service. Si un article ne règle pas votre problème et que vous souhaitez poser une question, notre communauté d’assistance est prête à vous répondre via @FirefoxSupport sur Twitter, et /r/firefox sur Reddit.

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

En savoir plus

Can't install new Firefox...says unauthorized publisher

  • 2 réponses
  • 5 ont ce problème
  • 9 vues
  • Dernière réponse par Morbus

more options

I used to have firefox and then I was having problems installing adobe flash player, then firefox itself crashed so i uninstalled it...now i can't seem to re-install the new firefox, it downloads from internet explorer and then says unknown publisher and file corrupt?

This happened

Not sure how often

i tried to download firefox

User Agent

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Win64; x64; Trident/4.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; MAAU; .NET4.0C)

I used to have firefox and then I was having problems installing adobe flash player, then firefox itself crashed so i uninstalled it...now i can't seem to re-install the new firefox, it downloads from internet explorer and then says unknown publisher and file corrupt? == This happened == Not sure how often == i tried to download firefox == == User Agent == Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Win64; x64; Trident/4.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; MAAU; .NET4.0C)

Toutes les réponses (2)

more options

Hello Anonymous.

Try downloading Firefox's installer to your documents first, and then running it from there. Hopefully that will get around Internet Explorer's buggy download "manager".

more options

R-click the Firefox installer, and select Run as Administrator. If that doesn't work, delete the installer, and R-click whatever browser you're using to download the Firefox installer.. select Run as Administrator, and then download/run the Firefox installer.

I had the same issue with my new Windows 7 setup. Wouldn't let me install Firefox even though I am set as the Administrator. I had to actually R-click and Run as Administrator.

Hope that helps.