flash player doesnt work on safari, even with the last version 11.6

1. Enable Plug-ins

Safari > Preferences > Security

Web Content:

Click in the box for "Enable Plug-ins".

2. Check whether you are currently in YouTube HTML 5 trial.

http://www.youtube.com/html5

At the bottom left of the page uncheck the box for

"You are currently in the HTML5 trial".

3. Reset Safari.

Click Safari in the menu bar.

From the drop down select "Reset Safari".

Uncheck the boxes next to all items.

Check the box next to "Remove all website data".

Click "Reset".

4. Turn off Extensions/Plug-ins if any that may interfere with Flash working properly.

Safari > Preferences > Extensions

Best.

On March 1 Apple again blocked Flash Player for Lion and Mountain Lion:

http://support.apple.com/kb/HT5660

Wait for an update.

If you're sure you've installed the latest version of Flash, take each of the following steps that you haven't already tried. After each step, relaunch Safari and test. For a "missing plug-in" error, start with Step 4.

1. If you're getting a "blocked plug-in" error, then from the menu bar select

 ▹ System Preferences… ▹ Flash Player ▹ Advanced

and click Check Now. Quit and relaunch your browser.

2. Triple-click the line below to select it:

from the contextual menu. A folder should open. If there is more than one item in the folder with the words "Flash Player" (not "flashplayer") in the name, open the respective Info windows, check the version numbers, and delete all except the latest. You may be prompted for your login password.

3. Re-download and reinstall Flash. Download it from this page:

5. Select

Safari ▹ Preferences... ▹ Extensions

from the Safari menu bar. If any extensions are installed, disable them.

6. In the Safari preference window, select

Privacy ▹ Remove All Website Data

Close the window. Then select

 ▹ System Preferences… ▹ Flash Player ▹ Advanced

and click Delete All. Close the preference pane.