Fix for Adobe Flash Player application error 0x710

So you open your browser and an error pops up indicating that adobe flash plugin application failed with 0x710 at location 0x777fa389 .


This is what worked to fix my problem.

See https://support.mozilla.org/en-US/kb/adobe-flash-plugin-has-crashed 

Disable hardware acceleration in Flash

Many Flash problems can be resolved by disabling hardware acceleration in your Flash Player settings (Adobe's Flash Player Help - Display Settings page has details). To disable hardware acceleration in Flash:

1. Go to this Adobe Flash Player Help page
2. Right-click on the Flash Player logo on that page.
3. Click on Settings in the context menu. The Adobe Flash Player Settings screen will open.
4. Click on the icon at the bottom-left of the Adobe Flash Player Settings window to open the Display panel.
   
   
   
5. Remove the check mark from Enable hardware acceleration.
6. Click Close to close the Adobe Flash Player Settings Window.
7. Restart Firefox. 

 IF that doesnt work then try this... 

Disabling Protected Mode in Flash 11.3

You can disable Protected Mode in Flash 11.3 and above by adding the line ProtectedMode=0 to the Flash "mms.cfg" file located in one of these locations: [44]

(Windows 32bit) C:\Windows\System32\Macromed\Flash

(Windows 64bit) C:\Windows\SysWOW64\Macromed\Flash

For example, on a Windows 7 64-bit system, open the C:\Windows\SysWOW64\Macromed\Flash folder, copy the file "mms.cfg" to the desktop, open it in Notepad, add a new line ProtectedMode=0 and then close Notepad, saving your changes. Next, go back to the C:\Windows\SysWOW64\Macromed\Flash folder, rename the original file to "mms.cfgBAK" (to save it as a backup) and then drag and drop in the modified "mms.cfg" file from the desktop. [45] [46] [47]

Note: To re-enable Flash Protected Mode, either restore a backup of the original mms.cfg file, if you saved one, or else re-edit the mms.cfg file to remove the ProtectedMode=0 line you added. Updating Flash Player or installing a newer version does not automatically re-enable Protected Mode. [48] [49]

If you try to save this and it doesnt allow it.. change the permissions on the mms.cfg file to allow you to have full access to it.

To change file permissions in Windows 7:
    Folder and file permissions
 Here are the steps to modify ownership and permissions of folders and files:
  1.       Right-click the file or folder, click Properties, and then click the Security tab.
  2.       Click Advanced, and then click the Owner tab.
  3.       Click Edit, and then do one of the following:
 ·         To change the owner to a user or group that is not listed, click Other users and groups and, in Enter the object name to select (examples), type the name of the user or group, and then click OK.
  ·         To change the owner to a user or group that is listed, in the Change owner to box, click the new owner.
  4.       If you want to take ownership of the contents of the folder, select the Replace owner on sub containers and objects check box.
  5.       Click OK, and then click Yes when you receive the following message:
          You do not have permission to read the contents of directory folder name. Do you want to replace the directory permissions with permissions granting you Full Control?
          All permissions will be replaced if you click Yes.