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10/10/2017 - Release - Flash Player 27

Adobe Employee ,
Oct 10, 2017 Oct 10, 2017

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In today's release, we've updated Flash Player with important bug fixes.  Current Flash Player customers who have selected the "Allow Adobe to install updates (recommended)" update mechanism will be automatically updated to the latest version of Flash Player over the next 24 hours.

Flash Player for Microsoft Edge and Internet Explorer 11 Update

With this monthly Flash Player update addressing functionality bugs, Flash Player for Microsoft Edge and Internet Explorer on Windows 8.1 and Windows 10 will not be updated on "Patch Tuesday", October 10th. This update will instead be released by Microsoft later this month.

The most recent Flash Player security bulletin can be found here: Security Bulletin (APSB17-31)

Features for Flash Player 27:

Support ActionScript API for Audio Device Manager

With the release of Flash Player 27, developers can now select the audio output from ActionScript using the new ActionScript API - “AudioDeviceManager”.  It is in sync with Flash Player's audio output settings. A UIA (User Invoked Action) restriction is applied to this API keeping in view user privacy concerns.  The API can only be invoked by a user invoked action.  If it is not invoked by user action, Flash Player throws a runtime error "IllegalOperationError" with error code 2176.

Use the AudioDeviceManager class to list down the audio output devices attached to a system using the property, deviceNames().  This returns an array of the attached devices.  The index of the selected device from that array can then be retrieved using the selectedDeviceIndex() property.  A new event introduced with this API, named AudioOutputChangeEvent.AUDIO_OUTPUT_CHANGE is dispatched to ActionScript listeners when the audio output changes.  It is dispatched when the user selects a different audio device from Flash Player's setting UI (Audio Output), content setting (AudioDeviceManager.selectedDeviceIndex), or when adding/ removing the device from the system.  The ActionScript client can check how the audio output change is triggered through “AudioOutputChangeEvent.reason” class.

The two reason codes are "AudioOutputChangeReason.USER_SELECTION" and "AudioOutputChangeReason.DEVICE_CHANGE".

Here is the general workflow of the API:

  1. The content provides a control such as a button that indicates that the user should click to select an audio device.
  2. When the user selects the control, a separate UI is presented to the user to handle the click event. It uses the new AudioDeviceManager API to enumerate Audio Output device names, and the UI setup work.
  3. When the user selects a device, the content uses the new AudioDeviceManager  API to set the new device in handling the user's selection.

Sample Snippet:

Access the system available audio device names

var audio_device_manager:AudioDeviceManager = AudioDeviceManager.audioDeviceManager;

var status_ta:mx.controls.TextArea;

status_ta.html = false;

status_ta.setStyle("fontSize", 9);

var audio_output_device_array:Array = audio_device_manager.deviceNames;

var selected_audio_device:String = audio_output_device_array[audio_device_manager.selectedDeviceIndex];

status_ta.text = "The default device is: "+selected_audio_device+newline+newline;

status_ta.text += "You have "+audio_output_device_array.length+" device(s) available."+newline+newline;

for (var i = 0; i<audio_output_device_array.length; i++)


    status_ta.text += "["+i+"] "+audio_output_device_array+newline;


Select an audio output device

var audio_device_manager:AudioDeviceManager = AudioDeviceManager.audioDeviceManager;

audio_device_manager.selectedDeviceIndex = desired_audio_output_index;

Monitor audio output change

function audioOutputChangeHandler(evt:AudioOutputChangeEvent):void


     if (evt.reason == AudioOutputChangeReason.USER_SELECTION) {

          [do something]

     } else if (evt.reason == AudioOutputChangeReason.DEVICE_CHANGE) {

          [do something]



Audio device selections made by Flash via AudioDeviceManager API are only valid within the current browser session.  When the browser is closed, the selection will be lost.  User selected audio devices are not persisted within Flash storage, it's the developer's responsibility to save and restore the audio settings if it makes sense for their workflow.  If a user plugs in another default device, ie. a USB headset, Flash content audio will automatically switch to this default device.

Known Issues:

  1. On Linux, Flash and Non-Flash audio player cannot play audio using the same device at the same time. If audio is switched to a device which is currently playing non Flash content, Flash audio will stop.
  2. Flash Player does not properly handle switching between devices with same


For complete information please see our release notes.

Fixed Issues

  • Audio device selection not working when there are multiple devices with same name(FP-4198585)

  • Content freezes while switching the tabs on Firefox (FP-4198571, FP-4198555)

  • Video stops rendering after minimizing/restoring the Firefox browser window

Known Issues

  • EVENT.ACTIVATE not triggered on chrome when a tab is dragged in and out of the Chrome's window(FP-4198532)
  • Flash Player settings panel become unresponsive when hardware acceleration is turned off on Firefox
  • Flash Player 64 bit (flash.ocx) quits unexpectedly (FP-4198598)

Current Flash Player users who have enrolled in the "Allow Adobe to install updates (recommended)" update mechanism will be automatically updated to Flash Player 27 over the next 24 hours.

Users who have selected "Notify me to install updates" will receive an update notification dialog within 7 days from today.  Please note that Windows users will need to restart their system or log out and in to activate the update notification dialog.

Customers using Google Chrome will receive updates through the Google update mechanisms.  Please note that this release is not available for ActiveX Flash Player on Windows 8.1 and Windows 10.

If you would like to install the update immediately, please use one of the links below:

Flash Player 26 Windows for Internet Explorer - ActiveX:

Flash Player 26 Windows for Firefox and other Netscape Compatible Browsers - NPAPI:

Flash Player 26 Windows for Opera and Chromium Based Browsers - PPAPI:

Flash Player 26 Windows for Google Chrome - PPAPI:

Flash Player 26 for Internet Explorer on Windows 8.1 (64-bit machine):

Flash Player 26 for Internet Explorer on Windows 8.1 (32-bit machine):

Flash Player 26 Windows for Internet Explorer and Edge on Windows 10 - ActiveX:

Flash Player 26 Mac for Safari, Firefox and other Netscape Compatible Browsers - NPAPI:

Flash Player 26 Mac for Opera and Chromium Based Browsers - PPAPI:

Flash Player 26 Mac for Google Chrome - PPAPI:

Flash Player 25 desktop for Linux (NPAPI):

Flash Player 25 desktop for Linux Chromium (PPAPI):

If you encounter a problem with broken or missing links, please clear your browser cache and try again.  If the problem persists, please create a new post in our forum or send email to ccampbel@adobe.com or mkumarjh@adobe.com.






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