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Credentials problem on Chrome, Windows 10

Community Beginner ,
Feb 13, 2018 Feb 13, 2018

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Chrome Version 63.0.3239.132 (Official Build) (64-bit)

Windows 10 Version 10.0.14393 Build 14393

Flash version -- whatever is built-in to Chrome 63.0.3239.132, I can't see it because...

When I load Flash Player Help , the animation does not run. In Developer Tools Console, I see the following error in flash-player.html:1:

Failed to load data:text;charset=utf-8,: The value of the 'Access-Control-Allow-Credentials' header in the response is '' which must be 'true' when the request's credentials mode is 'include'. Origin 'null' is therefore not allowed access. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

If I select the info button to the left of the URL, the drop-down shows Flash - allowed by an Extension, and "Allow" to the right of it.

That's my main question. I will probably open a separate issue that may or may not be related to this, in which I cannot login to vCloud director -- in middle of the page it says "vCloud Director requires Adobe Flash Player" even though Allow shows up after Flash.

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Adobe Employee ,
Feb 13, 2018 Feb 13, 2018

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I'm not able to reproduce the problem you describe.  I see some complaints in the developer console about some of the embedded analytics libraries, but they don't have any bearing on this.

The bottom line is that Flash content isn't working for you on multiple sites, despite the fact that you've enabled it.

Chrome is ultimately making the decision about whether or not to run Flash Player.  We're not even getting invoked, so there's no magic that we can work from our end.

The following guide might be useful:

Use or fix Flash audio & video - Computer - Google Chrome Help

I did notice that the version of Chrome you're using is a little behind.  It's probably worth updating it. 


If you're not able to run Flash Player after following the directions in Google's guide above, a fresh install of Chrome is probably a good next step.

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Community Beginner ,
Feb 13, 2018 Feb 13, 2018

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Upgraded to 64.0.3282.167, to no avail. Have tried all of the suggestions in the link above multiple ways. At one point, Flash worked on Chrome but it doesn't anymore. I no longer get the error message above, it simply doesn't work - tells me that Flash is disabled, but Chrome thinks that it is.

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Adobe Employee ,
Feb 14, 2018 Feb 14, 2018

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Yeah, I think you're basically looking at a clean install of Chrome at this point, then re-following the directions above to enable Flash Player.

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Community Beginner ,
Feb 14, 2018 Feb 14, 2018

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If by clean install you mean re-imaging the OS on my workstation, that isn't going to happen. I did uninstall & re-install Chrome to no avail. Will keep trying (perhaps there is some folder I need to delete -- of course I've already cleaned cache), and will post here if/when I figure it out. In the meantime will use other browsers when I need Flash. The other issue I have with WMware vCloud Director is my real issue and need to focus on that. Haven't opened a new thread on it here because I haven't been able to narrow it down. Am trying to get some outside help for this one.

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Adobe Employee ,
Feb 14, 2018 Feb 14, 2018

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Yeah, I was suggesting an uninstall/reinstall of Chrome, not the OS.  Flash Player is a built-in component of Chrome, so uninstalling and reinstalling should get you back to a good state.   It probably *would* work right out of the box on a new OS, but that's cheating. 

You really shouldn't *need* to delete anything in this instance, unless there's some kind of underlying problem with the filesystem, where the uninstallation process isn't able to delete those folders on its own.

If you go to chrome://flash, you should see details about the Flash Player that's installed, and it will give you the location to the folder that you'd need to delete, but I think that if you checked to see that those had the same-ish timestamp as the new Chrome installation, you can be confident that they were appropriately removed and replaced.

You *would* have to the run back through the steps to enable Flash Player from my first reply after reinstalling, since it should be back to a mostly-default state (aside from the settings it syncs back down from Google's servers, like bookmarks). 

It *does* take Chrome a few minutes to download Flash Player after a fresh install.  It doesn't come directly bundled with Chrome.  Chrome picks up the latest in the background after first launch.  Keeping them decoupled makes life easier when one of us needs to make patches available quickly.  You'll be able to tell that it's installed if you look in chrome://flash though.

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Community Beginner ,
Feb 14, 2018 Feb 14, 2018

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Thanks, that was helpful, I hadn't come across chrome://flash before. Top few lines of that one:

Google Chrome64.0.3282.167 ()
OSWindows UNKNOWN SP0 64 bit
Flash plugin28.0.0.161 <My User Info>\AppData\Local\Google\Chrome\User Data\PepperFlash\28.0.0.161\pepflashplayer.dll

Also relieved you didn't think I need to install the OS again. The thing is that after un-installing and re-installing Chrome, I didn't have to enable the Flash -- it was already enabled, with same settings. Maybe that is a clue, and I could look at the dates of the files to see if they are getting refreshed. I would prefer to actually get Chrome with flash working again before marking the answer above as correct, because there may be some step that is needed that could help someone else.

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Adobe Employee ,
Feb 14, 2018 Feb 14, 2018

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Okay, this is less elegant than I'd like, but if you go here:

chrome://settings/content/flash

And add the following to the allow list:

http://*

https://*

Does Flash start working for you?

Also, that switch is set to "Ask First", right?

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Community Beginner ,
Feb 14, 2018 Feb 14, 2018

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Tried, did not make a difference. Yes, switch is set to "Ask First" and I can't change it -- some group policy setting I think.

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Adobe Employee ,
Feb 15, 2018 Feb 15, 2018

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If you're in a managed environment, it's totally possible that your system administrator has just disabled Flash Player wholesale.

Do you see any interesting clues in chrome://policy/?

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Community Beginner ,
Feb 16, 2018 Feb 16, 2018

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No policies set. Can use Flash in IE or Firefox. I do find it interesting that after uninstalling and re-installing, Flash settings persist.

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