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Firefox will not run. Error message

  Tycho 12:40 27 Dec 2014

I have been using FF for ages. Now it tells me:

The application was unable to start correctly (0xc0000005). Click OK to close the application.

What I have done so far is to scan my laptop (W7 with all the updates). No problems found using AVG free.

I have uninstalled and reinstalled FF and get the same message. I am back to using Chrome now which seems to run without any issues.

Any ideas?


  spuds 13:38 27 Dec 2014

If you have CCleaner installed on your machine, then run a registry check with that, and see what happens. CCleaner free download click here

  Tycho 15:12 27 Dec 2014

Ccleaner downloaded and run. All seemed to go as it should but there is no change to FF.


  Tycho 17:31 27 Dec 2014

Thanks for your help, chaps.

I resolved the ssue witha system restore. I had only created a resotre point yesterday so that seemd the most direct route back to a working version of Firefox.


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