[saganite]

Any recent Flash player updates or windows updates? You might try to reset your computer to a time when Flash was working.

[j_guru]

make sure that you close your browser (all of them) after installing the plugin.

[ShadowAce]

[Red Badger]

Go to Control Panel and Un-install it. Then try downloading the latest version. I recall the same thing happening to me a while back. It took me several tries............

[Carriage Hill]

Did you uninstall the old copy first?

[Mr. K]

IBTARYLIC

(In Before The Are You Logged In comments)

[Mr. K]

Run Anti-Virus scan AND MalwareBytes scan too

[dfwgator]

Have you tried turning it off and on again?

[minnesota_bound]

Use their uninstaller.
http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html

Then install a new copy of Flash.
You can either try their main page for Flash or get a direct copy.

Main: http://get.adobe.com/flashplayer/

(Released 4/8/2014) Flash Player 13.0.0.182 (148.88 MB)
http://helpx.adobe.com/flash-player/kb/archived-flash-player-versions.html

[smokingfrog]

.. In before the "get a mac" crowd ...

[Kirkwood]

I had something similar happen and eventually I had to uninstall and reinstall my browsers. Something broke during an upgrade.

[Cheerio]

I had a Win 7 32 bit machine that experienced the same issue - nothing I would do would allow it to work. I finally decided to bite the bullet and reinstalled Win 7 in the 64 bit configuration which I had been putting off because I did not know where all the software program disks were. NOW EVERYTHING IS GREAT and I added more RAM (which I could not do under 32 bit configuration - well I could add more than 4Gb but Win will not recognize it).

[Cheerio]

I had a Win 7 32 bit machine that experienced the same issue - nothing I would do would allow it to work. I finally decided to bite the bullet and reinstalled Win 7 in the 64 bit configuration which I had been putting off because I did not know where all the software program disks were. NOW EVERYTHING IS GREAT and I added more RAM (which I could not do under 32 bit configuration - well I could add more than 4Gb but Win will not recognize it).

[TomGuy]

Browser?

There is a Firefox, etc., version and an IE version.

You might have the wrong version for your browser.

Also, I found I had to uninstall the previous version of Adobe Flash. There are ‘free’ uninstallers online (check Google).

[FreedomGuru]

What problems are you having?
Is the problem at a particular web site?

[rarestia]

What browser are you using? Sometimes the browser plugins don't re-enable after an install. That being said, your best bet is to first download a cleanup utility such as CCleaner by Piriform. Also download the latest Flash installer from Adobe.

Install CCleaner. Then uninstall all of your Adobe Flash entries in 'Add/Remove Programs' or 'Programs and Features,' depending on your Windows OS. Once uninstalled, run CCleaner and let it clean your disk AND do the registry.

Reboot

When your system is back online, run the Flash installer. When complete, reboot one more time, and try again. You should be back in business.

[Fresh Wind]

Flash has more bugs than an anthill.

Google “flash player unresponsive”.

[Cincinatus]

I had this same problem with Flash 13 (I use a MacBook Pro). Would not work and the web forums were no help. Finally uninstalled Flash 13.0 and went back and installed 11.0. Now both Firefox and Safari work fine.

Adobe Flash 13.0 has some serious bug; I would delete it until they resolve their problems.

[TheRightGuy]

could be a hardware problem ... perhaps a loose nut behind the keyboard

[BuffaloJack]

I ran into this problem about a week ago. Uninstalling and reinstalling did not do it.
I finally had success when I ran the Windows Restore utility and picked a restore point before the problem occurred.