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I get a recurring error message: "document.get Elements By Tag Name (...)[0] is undefined. the message repeats every time I try to page back. Reloading no cure

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  • Last reply by cor-el

kenperkins
kenperkins
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The above error message appears and until I click on it an make it go away, I can do nothing. I get into a mode where the message appears every time I click on page back and have to close the internet connection. Happens only in Firefox. I have reloaded Firefox and it goes away for twenty or thirty minutes, but returns.

The above error message appears and until I click on it an make it go away, I can do nothing. I get into a mode where the message appears every time I click on page back and have to close the internet connection. Happens only in Firefox. I have reloaded Firefox and it goes away for twenty or thirty minutes, but returns.

All Replies (2)

philipp
philipp
  • Moderator
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hello, please try to reset firefox and see if this can address the issue...

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window or otherwise make changes.

Which security software (firewall, anti-virus) do you have?

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