Xampp suddenly went wrong

Xampp suddenly fails to enter localhost. after a while, the system prompts that the requested URL (URL) cannot be obtained. in FFchrome, the system prompts this error, but everything is normal in IE. it's strange, everything works fine when you shut down. The port is turned on when you start the system. the configuration file should be correct. otherwise, IE should not be properly opened. I don't know why proxy access may be useless, 36 xampp installation error suddenly
Enter localhost. a prompt will be displayed later.
Error
The URL you requested cannot be obtained.

This error is prompted in FF chrome
But everything is normal in IE. it's strange that everything is fine when you shut down. It's like this when you start it.
All ports are opened, and the configuration file should be correct. otherwise, IE should not be properly opened.
I don't know why
No proxy is used for accessing the internet. the installation is 360.
Although I scanned the virus twice, I still suspected it was caused by the virus.
How can I change it and try again?

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Anti-virus-restart does not stop 360.
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Everything works normally in IEThis indicates that the web server is working normally.
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Exclude that your ie does not read the cache...
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You 'd better open FF's firebug console (note: open cookie monitoring), and then refresh the page to view the console reflection. the prompt is: are there many requests or cookies?