This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

I have trouble installing the Yahoo toolbar and roboform in firefox. I keep getting a message saying the software is corrupt.

  • 2 replies
  • 1 has this problem
  • 1 view
  • Last reply by AliceWyman

pubspy
pubspy
more options

I am unable to install the yahoo toolbar and roboform. I used to have those before no problem. I have since got a message telling me that they are not supported on Firefox. I tried to uninstall and reinstall firefox but when I try to install either roboform or the Yahoo toolbar I get a message telling me that the software is corrupt and will not install.

I am unable to install the yahoo toolbar and roboform. I used to have those before no problem. I have since got a message telling me that they are not supported on Firefox. I tried to uninstall and reinstall firefox but when I try to install either roboform or the Yahoo toolbar I get a message telling me that the software is corrupt and will not install.

Chosen solution

Where are you trying to install that software?

Enter about:config into your Firefox address bar Click the I'll be careful button Find xpinstall.signatures.required in the list Right click the preference Select Toggle until the value is false

Read this answer in context 👍 0

All Replies (2)

FredMcD
FredMcD
more options

Chosen Solution

Where are you trying to install that software?

Enter about:config into your Firefox address bar Click the I'll be careful button Find xpinstall.signatures.required in the list Right click the preference Select Toggle until the value is false

AliceWyman
AliceWyman
  • Moderator
more options

Update: The Yahoo toolbar add-on was updated on December 29, 2015. The latest version resolves the problem. If you followed instructions to change the xpinstall.signatures.required preference to false in the Firefox Configuration Editor (about:config page) as a workaround, you should reset the preference back to true, which is the default value.