What do you mean by a red page error ?

Hello,

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Thank you!

You may have ad / mal-ware. Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

Is that the page that open if Firefox detects that the page is reported as a malware or phishing page

• https://support.mozilla.org/kb/how-does-phishing-and-malware-protection-work

Firefox uses a Google service to check pages. You can check the page via the Google Safe browsing website and contact Google for details.

• http://www.google.com/safebrowsing/diagnostic?site=