the prodram donot swith preview to project

Hi Moahmed

there is an issue with the latest version of Flash.  Depending on which Windows OS you are running there are some workarounds that you can use.

Read this post for the latest updates and workarounds

https://community.articulate.com/discussions/articulate-storyline/preview-not-working-in-storyline-2

i work on windows 8.1

is it good?

Here are the instructions from Articulate

https://en-au.articulate.com/support/storyline-2/preview-isnt-working-in-articulate-software-with-flash-player-2000267-installed

i am also on Windows 8.1 and I had to turn off IE in Windows features

Hi Moahmed!

Looks like Wendy has popped in to assist you here.

I will add this thread so that we can pop in here and update when applicable.

Hey Wendy! Congratulations on that Hero badge - it looks good on you! Well deserved and we appreciate all of your assistance in the forums :)

Thanks Leslie I feel very honoured!

Hi Moahmed, 

Adobe and Microsoft released information that Windows 7, Vista and Windows 10 have been updated. 

Install the latest Windows updates to resolve it.

1. Go to the Start menu and click Settings.
2. When the Settings window opens, click Update & Security.
3. Click Check for updates and allow the latest updates to install.
4. Reboot your computer and test your Articulate software again.

We're waiting for additional information in regards to Windows 8.

And Wendy - congratulations! MUCH deserved!!! 

Thanks Ashley!

Good news! Adobe and Microsoft have fixed the Flash Player bug that broke many applications just before the new year, including Adobe Captivate, Articulate Storyline, and Articulate Studio.

Here's how to install the latest Adobe/Microsoft update so you can preview your e-learning projects, edit videos, and launch CD-published courses again.