Help! I can't install Adobe Flash Player.

[Utrakil]

Hello dear fellow warriors. I have a problem I can't solve with my sword .
I can't install adobeflash player. it always gives me this message:
visitors can't see pics , please register or login

after clicking yes or no the installer says
"undefined" and nothing else happens.

Iknow it is a shit program anyways but it is needed for some sites.
so please help me!

[Araxiel]

My youtube flash player thingy is broken. Can't go fullscreen. Started using HTML5 for youtube now.

[Casul]

Basicly a problem that appears when you missed a major update but it looks like you installed flashplayer 18 (latest), soo I would say to try this:

https://helpx.adobe.com/flash-player/kb/installation-problems-flash-player-windows.html#main-pars_header

Try to get the offline installer if it still doesnt work

[Utrakil]

I first could not update because of the same error. So I decided to delete flash and go for a fresh installation. this failed as well and leaves me with no flash

Thanks cassie. the link "Flash Player for Firefox - NPAPI" at the bottom of the site solved it.