After updating to the latest chrome dev version which adds flash to its browser sandbox, sound from flash videos do not play. The videos loads fine and plays fine but the sound doesn't play at all.

Trying to play the same video in nonsandboxied chrome, the video plays fine with sound.

Google Chrome Canary build 9.0.583.0
Window 7 64 bit
Sandboxie ver 3.50 (64 bit)

No sound when using flash player when sandboxed.
Works fine while using program outside of Sandboxie.

yep same problem I am having with the latest google chrome dev build that I posted earlier.

I am guessing it has somethign to do with the way how they are natively sandboxing flash now conflicting with how sandoxie sandandboxes everything.

Thank you for the problem report, I will try to address this soon.

I found if that if you disable Chrome's built in Flash player.

C:\Users\William\AppData\Local\Google\Chrome SxS\Application\9.0.583.0\gcswf32.dll

Instead use the standard Flash player.

C:\Windows\SysWOW64\Macromed\Flash\NPSWF32.dll

You will be able to hear sound again when watching a flash video.
Hopefully this will hold everybody over until tzuk can come up with a better solution

P.S. I just tried doing that order in reverse, apparently if both plugins are enabled
like they are in default you will not have any sound.
I would choose to use the built in plugin,that way you don't have to worry about updating it.

P.P.S this isn't reliable,I have needed to toggle both on an off to work.
What works one time may not work in another.

Ditto no sound.

Version 3.51.04 should fix this.

google chrome dev ver. 9.0.587.0
sandboxie ver. 3.51.04 (64 bit)

still no sound with flash

Same as above, still no sound.

I'm not sure what to tell you guys as I was able to reproduce the problem and I did fix it.
Do you guys use some other security software in addition to Sandboxie?
Perhaps you're both using the same software?

Same here, no sound.

Google chrome dev 9.0.587.0

Running Avast5 AV realtime, outside the sandbox, I think that's my main security software.

Well, I have nod32 running Windows 7 64bit.

Just checked against WinXP 32bit running in virtualbox(don't have any security software), same result.

Yeah, same version 9.0.587.0 dev.

The only security software I'm using is Microsoft Security Essentials 2 beta.

Very strange, I have been running v9.0.587.0 of Chrome off and on in a sandbox for the last week and I haven't notice sound missing from any videos...
In fact, I just tested it a few seconds ago by watching a Hitler rant video on Youtube!
However the difference might be that I install Chrome sandboxed and run it, while others are perhaps installing Chrome unsandboxed and running it sandboxed?

The problem I identified is that the Flash player sub-process of Google Chrome runs with very low privileges and tries to open the following registry key,

HKEY_LOCAL_MACHINE

Outside of Sandboxie this works, even though the Flash player process has almost zero privileges, because the the HKLM key has permission for Everyone.

But under Sandboxie this fails because it actually goes to the key

HKEY_USERS\Sandbox_Whatever_DefaultBox\machine

which does not have permission for Everyone. So what I did was in this special case, redirect the request back to the HKEY_LOCAL_MACHINE (with read-only access of course) so the open request can be successful.

* * *

So what I would ask you guys to do is use RegEdit to add Everyone permission to your

HKEY_USERS\Sandbox_Whatever_DefaultBox\machine

registry key. I'd like to know if this makes any difference.