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what does this mean - i can't get to many sites? Disallowed key characters in global data.

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  • Last reply by cor-el

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Disallowed key characters in global data. - i keep getting this message when trying to go to websites!

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I think this is an error from a web server. It might be the site you're visiting, or it might be a site that Firefox is trying to access in the background, such as an advertising server, or it might be a site that an add-on is accessing.

Could you try visiting some of those same sites in Firefox's Safe Mode? That's a standard diagnostic tool to bypass interference by extensions (and some custom settings). More info: Diagnose Firefox issues using Troubleshoot Mode.

You can restart Firefox in Safe Mode using

Help > Restart with Add-ons Disabled (Flash and other plugins still work)

In the dialog, click "Start in Safe Mode" (not Reset)

Any difference?

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You can also try to clear the cache and cookies only from websites that cause problems.

"Clear the Cache":

  • Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Firefox/Tools > Options > Privacy > Cookies: "Show Cookies"