Adding Release block label, please undo if not the case.

Looks like the component updater is failing to deliver Flash to your machine.

Could you:
(1) Launch the browser and navigate to chrome://net-internals
(2) Try to load the game, seeing the 'download failed' message.
(3) Send us the resulting net-internals capture. There should be at least one request to clients2.google.com.
(4) Then navigate to chrome://components and upload a screenshot of that page.

It would also be helpful if you can confirm:
* You have not disabled component updates
* Your firewall does not block http(s)://clients2.google.com/ and http(s)://redirector.gvt1.com
* Your user-data-dir is writable and not on a network drive

With response to comment#3

1. Please find the following attachment of chrome://net-internals events screen cast and chrome://components screenshot.
2. Component updates are not disabled and firewall is not blocking http(s)://clients2.google.com/ and http(s)://redirector.gvt1.com

Deleted: net-internals.mov 7.5 MB

net-internals.mov 7.5 MB Download

Deleted: components.png 111 KB

	components.png 111 KB View Download

I have this exact same issue except with the streaming site twitch.tv.

Prior to this build it wouldn't load (Movie Player hasn't loaded or whatever) when going to the stream at twitch.tv/streamname, however going to twitch.tv/streamname/popout would work.

Now neither of them work with Download Failed showing.

It works absolutely fine in normal Chrome.

Similar issues for me too.
I have set to ask to run plugins and normally get requests to run flash but now just getting 'download failed' for all flash components, e.g. bbc.com/news (videos), facebook.com (games), etc.

Yes, this is completely broken on today's Canary. I'm working on a fix now, and it will ship in tomorrow's Canary.
I think it's broken for a different reason than the original post experienced, so the fix for the immediate issue is unlikely to fix everyone.

(Renaming this to prevent the creation of duplicates.)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/30f12cd92e58dddfd196e72356aea5abefacaf4d

commit 30f12cd92e58dddfd196e72356aea5abefacaf4d
Author: waffles <waffles@chromium.org>
Date: Wed Aug 31 22:24:06 2016

Allow component-updated Flash to override the placeholder fake Flash even if
the version is lower.

BUG= 642323 

Review-Url: https://codereview.chromium.org/2298343002
Cr-Commit-Position: refs/heads/master@{#415781}

[modify] https://crrev.com/30f12cd92e58dddfd196e72356aea5abefacaf4d/chrome/browser/component_updater/pepper_flash_component_installer.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e3dbbe45a1f8e74a80e520c2e74a8e47b84d0d72

commit e3dbbe45a1f8e74a80e520c2e74a8e47b84d0d72
Author: fgorski <fgorski@chromium.org>
Date: Wed Aug 31 23:08:18 2016

Revert of Allow component-updated Flash to override the placeholder fake Flash even if (patchset #2 id:20001 of https://codereview.chromium.org/2298343002/ )

Reason for revert:
missing ;

Original issue's description:
> Allow component-updated Flash to override the placeholder fake Flash even if
> the version is lower.
>
> BUG= 642323 
>
> Committed: https://crrev.com/30f12cd92e58dddfd196e72356aea5abefacaf4d
> Cr-Commit-Position: refs/heads/master@{#415781}

TBR=wfh@chromium.org,waffles@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= 642323 

Review-Url: https://codereview.chromium.org/2300883002
Cr-Commit-Position: refs/heads/master@{#415794}

[modify] https://crrev.com/e3dbbe45a1f8e74a80e520c2e74a8e47b84d0d72/chrome/browser/component_updater/pepper_flash_component_installer.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/df37d85863495afc85ba5f0d429fca1d0643eb62

commit df37d85863495afc85ba5f0d429fca1d0643eb62
Author: waffles <waffles@chromium.org>
Date: Wed Aug 31 23:56:56 2016

Allow component-updated Flash to override the placeholder fake Flash even if
the version is lower.

BUG= 642323 

Committed: https://crrev.com/30f12cd92e58dddfd196e72356aea5abefacaf4d
Review-Url: https://codereview.chromium.org/2298343002
Cr-Original-Commit-Position: refs/heads/master@{#415781}
Cr-Commit-Position: refs/heads/master@{#415811}

[modify] https://crrev.com/df37d85863495afc85ba5f0d429fca1d0643eb62/chrome/browser/component_updater/pepper_flash_component_installer.cc

 Issue 642658  has been merged into this issue.

 Issue 643064  has been merged into this issue.

OK, I believe this to be fixed in today's canary release (55.0.2846.0).

There were two issues: the change above, and a server-side misconfiguration that blocked Flash from be distributed to certain Mac clients.

Your change meets the bar and is auto-approved for M54 (branch: 2840)

While I no longer get the 'download error', I'm still not getting the flash content - just a white or black box.

Re #18:
 * Can you tell me the version and location of Flash in chrome://plugins? (Click +Details to see the location.)
 * Do you get the content if you click "Run all plugins this time" from the omnibox prompt?
 * Do you see anything if you mouseover the box (and hold the mouse stationary for a few seconds)?
 * Do you see anything if you right-click or control-click the box?
 * Do you get the content if you re-open the same page in a new tab after you see the white box?
 * Do you get the content if you turn off control-click-to-play ("ask to run plugins")?
 * Do you get the content after you restart Chrome?

Please merge your change to M54 (branch: 2840) before 5:00 PM PST Monday [09/05] if you would like to make it to M54 Beta promotion on Thursday [09/08].

Hm, bugdroid didn't update the bug with the merge, not sure why: 
https://chromium.googlesource.com/chromium/src/+/2c8ef8a230889b42679ecaf3c27eb9e24bc10217

Fix is not landed yet for the Chrome Dev Version - 54.0.2840.14, hence couldn't verity it. Would monitor this issue and update it accordingly.

Base Commit Position for Chrome Dev Version - 54.0.2840.14 is 414607

This error ‘Download failed’ is seen on playing videos on Linux 14.04 chrome version 54.0.2840.14 (post revision 2840@{#114} in comment #22) for the sites 
http://www.foxnews.com/ ,http://xinhuanet.com/, http://uploaded.net/ and http://www.pconline.com.cn/ whereas a black blank screen is seen on win10 for the site http://www.foxnews.com/, http://uploaded.net/

Adding some observations:

Good Build: 54.0.2840.8 dev
Bad Build: 54.0.2840.10 dev

Checked in Ubuntu 14.04 with http://www.bbc.com/news/world-asia-india-37274925 and http://www.cbsnews.com/.

Deleted: In 54.0.2840.8.ogv 3.9 MB

	In 54.0.2840.8.ogv 3.9 MB View Download

Deleted: In 54.0.2840.10.ogv 6.6 MB

	In 54.0.2840.10.ogv 6.6 MB View Download

Some more observations are:
1.On upgrading/re-installing to latest dev black screen is seen in Linux
2.On fresh installing download failed error is seen

Deleted: 642323 on fresh install.ogv 6.3 MB

	642323 on fresh install.ogv 6.3 MB View Download

Deleted: 642323 on upgrade.ogv 7.2 MB

	642323 on upgrade.ogv 7.2 MB View Download

The Cl already landed in 2840 branch but the issue still exist.Requesting  waffles@ to take a look. Today's Dev release is blocked due to this bug.

just to update, on Win 10 Canary #55.0.2851.0 and below are the observations -

Videos playing fine -
http://www.cbsnews.com/news/hillary-clinton-answers-press-questions-clinton-foundation-donald-trump-campaign-plane/
http://www.bbc.com/news/world-asia-india-37274925

showing blank screen -
http://video.foxnews.com/v/2553193403001/mike-pence-holds-town-hall-in-springfield-missouri/?#sp=watch-live 
http://xinhuanet.com/
 

#27: This is not a dev blocker.

Linux (#24, #25): This is the expected behavior on Linux for the first run after installation. Due to the sandboxing model on Linux we are unable tYou'll need to restart the browser to view Flash, due to how the sandboxing model works on that platform. There is work to improve the UI around this, currently being tracked in  issue 641611 .

Windows (#28): I cannot reproduce failures on foxnews or xinhuanet locally. Can you please provide the details requested in #20?

 Issue 644578  has been merged into this issue.

Just to update the latest behavior of the bug.

Test Link
==========
1.http://www.chrome-games.com/play-apple-shooter-online
2.http://www.cbsnews.com/
3.http://www.bbc.com/news/world-asia-india-37274925
4.http://xinhuanet.com/
5.http://video.foxnews.com

Tested this issue on Windows-10 (Non-Corp) using chrome latest canary #55.0.2853.0 and observed no issues in playing videos and games from the above test link 1 to 4. 
But issue is still observed on playing link 5 (foxnews.com). While clicking on the videos it starts buffering but nothing plays.

Attaching screen-cast for reference.  

Deleted: 642323.mp4 3.8 MB

	642323.mp4 3.8 MB View Download

I'm guessing the issue with foxnews is that for some reason the ad at the start of the stream (a separate Flash instance) failed to display/launch, and the stream won't start until it exits cleanly. (The stream starts fine for me, though the ad took a few seconds to load.)

I don't know why but the flash is magically back to normal when it is still on Version 54.0.2840.14 Dev.

Still having issues with Canary (55.0.2856.0), 
1) BBC News: loads to a black screen.
2) Facebook games: loads to white screen and right-click reveals "Movie not loaded"

Hi all; we have fixed a number of issues around Flash and "Movie not loaded" in the past few weeks; please let me know if you're still encountering issues.

There is a another Issue 641186 about flash which I have reported a month ago.
And it has been multiple versions, but the issue still exist in my current version of Dev Channel(55.0.2868.3 dev (64-bit)). Nobody has paid any attention except changing the "Components".

BTW my Canary channel(Version 55.0.2872.0 canary (64-bit)) still "Couldn't load plugin."

Deleted: Screen Shot 2016-09-27 at 3.25.55 AM.png 285 KB

	Screen Shot 2016-09-27 at 3.25.55 AM.png 285 KB View Download

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2c8ef8a230889b42679ecaf3c27eb9e24bc10217

commit 2c8ef8a230889b42679ecaf3c27eb9e24bc10217
Author: Joshua Pawlicki <waffles@google.com>
Date: Thu Sep 01 23:18:43 2016

Allow component-updated Flash to override the placeholder fake Flash even if the version is lower.

BUG= 642323 

Committed: https://crrev.com/30f12cd92e58dddfd196e72356aea5abefacaf4d
Review-Url: https://codereview.chromium.org/2298343002
Cr-Original-Commit-Position: refs/heads/master@{#415781}
Cr-Commit-Position: refs/heads/master@{#415811}
(cherry picked from commit df37d85863495afc85ba5f0d429fca1d0643eb62)

Review URL: https://codereview.chromium.org/2300243002 .

Cr-Commit-Position: refs/branch-heads/2840@{#114}
Cr-Branched-From: 1ae106dbab4bddd85132d5b75c670794311f4c57-refs/heads/master@{#414607}

[modify] https://crrev.com/2c8ef8a230889b42679ecaf3c27eb9e24bc10217/chrome/browser/component_updater/pepper_flash_component_installer.cc