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

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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

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  • Adobe® Acrobat® Plug-in for Web Browsers, Version 15.009.20077
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FredMcD
  • Top 10 Contributor
4259 solutions 59636 answers

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

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
  • Moderator
240 solutions 2597 answers

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.

'''Update:''' The [https://addons.mozilla.org/firefox/addon/yahoo-toolbar/ 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 [[Configuration Editor for Firefox|Firefox Configuration Editor]] (about:config page) as a workaround, you should reset the preference back to <u>true</u>, which is the default value.