Tap here to go to the mobile version of the site.
Your Firefox is out of date and may contain a security risk! Upgrade Firefox

Support Forum

why this error display "Adobe Flash Player has stopped potentially unsafe operation"


why this error display "Adobe Flash Player has stopped potentially unsafe operation"

In message box following message display:

The following local application on your computer or network: null
is trying to communicate with this internet-enabled location : www.ajaxcdn.org

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.6 r602
  • Facebook Desktop Plugin
  • 3.0.40818.0
  • Adobe PDF Plug-In For Firefox and Netscape


  • User Agent: Mozilla/5.0 (Windows NT 6.1; rv:16.0) Gecko/20100101 Firefox/16.0

More Information

Tyler Downer
  • Administrator
  • Moderator
1165 solutions 6642 answers

Please update to Firefox 19.0.2 Update Firefox to the latest version

jjgronk 0 solutions 1 answers

Helpful Reply

I get the same message and I already have the latest version (20.0.1) installed. Any other suggestions? Please and thank you!

  • Top 10 Contributor
  • Moderator
10762 solutions 96861 answers

Are you opening a website from internet or does this happen in you open a (saved) page that you've stored on your computer?

daluu 0 solutions 1 answers

Getting this error as well. But the error only occurs when I open the Firefox browser. Is there a fix to this? I went into the security settings for Flash Player and allow it, but the error is still appearing.

Wesley Branton
  • Top 25 Contributor
178 solutions 2062 answers

Try the following:

  • Run a full scan of your computer using an anti-virus program
  • Scan for bad registries (I recommend CCleaner)
  • Update all Firefox plugins