Joomla 3.4.1

I was hoping somebody could briefly explain this for me. I am not that familiar with tokens, sessions or cache.

My site was working fine with no issues however I decided to enable the "System-Cache" plug-in and set "Use Browser Caching" to Yes. Since doing this I have been unable to login to the website, each time I receive a blank page with an error Invalid token.

I have since disabled this plugin, cleared cache and all is working well again, no login issues. So am I not able to use browser caching? Perhaps I should be doing something else? I couldn't find any definitive answers to this question, lots of people suggesting different solutions.

Tested with Chrome and IE if that matters.

Any advice appreciated.

1 Answer 1


There have been a lot of known (yet unfixed) issues with the System Cache plugin and Use Browser Caching when trying to login. A lot of people have reported an Invalid Token.

There are some other things that could be causing this. So try the following (some may not apply to your specifically)

  • Disable apache's mod_cache
  • Disable the server Memcache feature
  • Set Use Browser Caching to Off
  • Clear all cache and cookies from your browser

If you require caching, I'd recommend going with a dedicated caching extension. Perhaps JotCache.

Hope this helps

  • thanks @Lodder his info is really helpful! Hopefully Joomla will improve on the whole cache thing as there does seem to be a lot of frustration surrounding it.
    – jonboy
    Jul 10, 2015 at 10:27

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