hello ajouw, please download the full firefox installer for your system and language from https://www.mozilla.org/firefox/all/ and try to install again. if you continue to having problems you could also try right-clicking the setup file & choose "run as administrator"...

thx it works

I uninstalled Firefox because it was failing to open known website saying they could not be found. I then downloaded the current version (No 26) and have tried to install it repeatedly and unsuccessfully -- each time getting the message "7-Zip Can not create temp folder archive". Have tried installing it "Running as Administrator" but that results in the same error message. I even uninstalled the program named 7-Zip, but not did not cure the error problem. Any suggestions beyond those posted above would be welcomed. Thanks.

Hi grawil45

Could you please start a new thread for your question instead of posting in an existing thread?

Then you can provide more information like your operating system and installed extensions and installed plugins.

• [start a new thread]
• [/kb/Using+the+Troubleshooting+Informatio...]

In case of crashes also please add some recent crash IDs that you can find on the about:crashes page and that start with a "bp-" prefix

Try to clear the temp folder where the installer stores its files after extracting.

Make sure that your security (anti-virus) software isn't causing problems.

Boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.

I tried the solution but i still get the same error :(

After much messing around and frustration, I finally solved the problem by (1) uninstalling 7-Zip; (2) rebooting the computer; (3) reinstalling 7-Zip; (4) creating a 'temp' folder in the 7-Zip program; and (4) running the installation of Firefox directly from the download page instead of downloading it first onto my computer and running setup from the downloaded file. Worked like a charm.

FWIW: strangely enough, uninstalling 7-Zip and rebooting the computer did not get rid of the '7-Zip' error message when trying to install Firefox. I know next to nothing about how computers' innards work, but it struck me as bazaar that uninstalling 7-Zip and rebooting the computer didn't at least get rid of the 7-Zip error message.

Thanks to all for the suggestions

The Firefox installer is compressed with the 7-zip program as a self extracting archive, so you do not need the 7-zip program unless you want to extract the files in this archive to make modifications.
This error message comes from the stub that tries to unpack the archive to start the installation and creates a folder in the temp folder to do this and seems to fail to complete this operation.

Run the stub or the full download from C:\ . It looks like 7-zip wants to create the temp folder in the folder it is run from.