CCleaner makes Facebook/ Twitter and forms impossible! Now what?

I just installed CCleaner (V4.10) and used it.

Afterwards Facebook shows nothing but a blank page, Twitter can’t fill in my password there, the form doesn’t work, the css seems to be not working,

And at the $*@#% same time, my passwords, urls and usernames seem to have been remembered for other sites. How’s that for deleting history cookies etc?

Have restarted didn't do anything.

What to do. I'm stressed and angry because I have to do some work, including being on Twitter in a shortwhile.

OS windows8.1 ( yeah I know)

Firefox

Hello Margreet and welcome to the forum. I'm sorry to hear about your problems. I did several Google searches and may have found a solution for you. There were a number of people who claimed this worked for them.

First, clear the cache in Firefox, the directions are here: https://support.mozilla.org/en-US/kb/how-clear-firefox-cache#w_clear-the-cache Then close Firefox.

Second, go to the Command Prompt on the applications screen. Then right click it, and select "Run as Administrator" on the bar at the bottom of the screen. Then enter "ipconfig /flushdns" (without the quotes, and with a space before the "/" symbol). This will clear the DNS cache. Then start Firefox and see if you can access Facebook and Twitter.