This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

Pentium XP pro (version 5.1 build 2600 SP3) 32bit; phys mem 2086988kb: 59G free of 145G HD: firefox 38(up to date) stops Adblock being downloaded - why, please?

  • 1 freagra
  • 1 leis an bhfadhb seo
  • 1 view
  • Freagra is déanaí ó user633449

more options

On my desktop, Adblock Plus starts to download then there is a message " firefox cannot modify the needed file".

Adblock used to be on, and work, also Ghostery. Firefox 38.0.05 is said to be up to date, but it won't allow update to newer versions.

Now being plagued by ads.

How do I fix the PC please (it's not this laptop)?

On my desktop, Adblock Plus starts to download then there is a message " firefox cannot modify the needed file". Adblock used to be on, and work, also Ghostery. Firefox 38.0.05 is said to be up to date, but it won't allow update to newer versions. Now being plagued by ads. How do I fix the PC please (it's not this laptop)?

All Replies (1)

more options

Firefox 38 is not up to date. Please update to Firefox 40.0.3 (download it from www.getfirefox.com if necessary).

It sounds like you may have malware (not surprising since Windows XP is full of known security holes and is no longer supported). Try the tools at Troubleshoot Firefox issues caused by malware