To recapitulate: currently I am running Sandboxie 5.22 on 64-bit Windows 7 Professional SP2 (fully updated).
Firefox Quantum v. 57 ordinarily has not output any sound when it displays a video on a website page while Firefox is running sandboxed. While running without a Sandboxie sandbox, Firefox has functioned as expected. (I run Microsoft Security Essentials as the "anti-virus".)
With regard to Firefox Quantum v. 57 settings and configuration:
(1) For the Options Performance preferences: If I enable "recommended settings", then Hardware Acceleration is enabled, and the Content Process Limit is 1 (default) unless I increase it -- there is no "0" option.
Disenabling Hardware Acceleration makes no difference. The comment about the Content Process Limit is
"Additional content processes can improve performance when using multiple tabs, but will also use more memory." Since there is 16 GB of system memory on this rig, increasing it shouldn't cause a problem.
(2) Reducing the
about:config setting for
security.sandbox.content.level to zero makes no difference, nor did reducing it to a value of 1 or of 2 from the initial value of 3.
(3) The
about:config setting for
browser.tabs.remote.autostart was already set to false. I toggled
browser.tabs.remote.autostart2 to false also. Doing that has not resolved the problem.
(4) Note: currently the Firefox NoScript 10.1 add-on is configured to "Scripts Globally Allowed" because there have been problems with using it the way that I have customarily used it before. But there aren't any problems when I use that setting, as undesirable and risky as it is. There also seem to be some hidden Firefox Quantum "security" setting(s) that attempt to control website usage of JavaScript, but I haven't had an opportunity to investigate that aspect of the issue.
THUS FAR:
(A) Sandboxed Firebox Quantum
does not display video with sound for
https://www.youtube.com, for
https://www.msn.com/?cp=p:news, or for any video shown on
https://www.facebook.com/ (including video on the pages of various and sundry websites to which Newsfeed items link). Frankly, though, apparently Facebook either has other problems with Firefox Quantum or problems of their own with the website, or probably both.
(B) Currently, sandboxed Firefox Quantum displays video with sound for
http://www.msnbc.com/ as anyone would expect. However, I haven't tested it with each of the respective changes (above) so I don't know whether it would not have worked previously.
FYI: following is the configuration for the sandbox in which Sandboxie runs Firefox Quantum v. 57, preceded by Global Settings and definitions of Templates:
Code: Select all
[GlobalSettings]
ActivationPrompt=n
Template=nVidia_Stereoscopic3D
Template=Logitech_G15_Keyboard
Template=OfficeLicensing
Template=Microsoft_Security_Essentials
Template=Microsoft_MSMQ
Template=LastPass
TemplateReject=WindowsLive
TemplateReject=KeyScrambler
ForceDisableSeconds=10
[TemplateSettings]
Template=LastPass
[Template_Local_Secure_Directories]
Tmpl.Title=Local Secure Directories
Tmpl.Class=WebBrowser
ClosedFilePath=!firefox.exe,%Local AppData%\Mozilla\Firefox
ClosedFilePath=!firefox.exe,%AppData%\Mozilla\Firefox
ClosedFilePath=!iexplore.exe,%Favorites%
ClosedFilePath=!iexplore.exe,%Cookies%
ClosedFilePath=!chrome.exe,googleupdate.exe,%Local AppData%\Google\Chrome
ClosedFilePath=!chrome.exe,googleupdate.exe,%AppData%\Google\Chrome
ClosedFilePath=!wmplayer.exe,C:\Program Files\Windows Media Player\
[Template_Local_AutoIgnore_Directories]
Tmpl.Title=Local AutoIgnore Directories
Tmpl.Class=WebBrowser
AutoRecoverIgnore=C:\Users\SYSOP\AppData\Roaming\Microsoft\Windows\Recent
AutoRecoverIgnore=C:\Users\SYSOP\AppData\Roaming\Microsoft\Windows\Temporary Internet Files
AutoRecoverIgnore=C:\Users\SYSOP\AppData\Local\Temp
AutoRecoverIgnore=C:\Users\SYSOP\AppData\Roaming\Adobe\FlashPlayer
AutoRecoverIgnore=C:\Users\SYSOP\AppData\Roaming\Adobe\Macromedia
AutoRecoverIgnore=C:\Users\SYSOP\AppData\Roaming\Macromedia
[Template_Local_Recover_Folders]
Tmpl.Title=Local Recover Folders
Tmpl.Class=WebBrowser
RecoverFolder=C:\ProgramData
RecoverFolder=C:\Users\SYSOP\Downloads
RecoverFolder=C:\Users\SYSOP\AppData
RecoverFolder=C:\TEMP
RecoverFolder=C:\WINDOWS
RecoverFolder=F:\AGAPE
RecoverFolder=F:\BACKUPS
RecoverFolder=F:\COMPUTER
RecoverFolder=F:\DNL
RecoverFolder=F:\GAMES
RecoverFolder=F:\GAMES\Alan Wake (Remedy)
RecoverFolder=F:\GAMES\World of Warcraft (Blizzard)
RecoverFolder=F:\GAMES\The Elder Scrolls Online (Zenimax)
RecoverFolder=F:\GAMES\The Elder Scrolls V - Skyrim (Bethesda)
RecoverFolder=F:\GAMES\HUMBLE BUNDLES
RecoverFolder=F:\INSTALL
RecoverFolder=F:\INSTALLERS
RecoverFolder=F:\LIVING
RecoverFolder=F:\LIBRARY
RecoverFolder=F:\MEDIA
RecoverFolder=F:\NOTES
RecoverFolder=F:\Program Data
RecoverFolder=F:\ProgramData
RecoverFolder=F:\Program Files
RecoverFolder=F:\Program Files (x86)
RecoverFolder=F:\SCRAPBOOK
RecoverFolder=F:\SCREENSHOTS
RecoverFolder=F:\SNAPSHOTS
RecoverFolder=F:\TEMP
RecoverFolder=%{374DE290-123F-4565-9164-39C4925E467B}%
RecoverFolder=%AppData%\Mozilla\Firefox\Crash Reports
RecoverFolder=%AppData%\Mozilla\Firefox\Profiles\extensions
RecoverFolder=%Favorites%
RecoverFolder=%Cookies%
RecoverFolder=%Personal%
RecoverFolder=%Desktop%
[Firebox]
Enabled=y
BoxNameTitle=y
BorderColor=#00FFFF,ttl
ConfigLevel=7
DropAdminRights=n
ForceProcess=firefox.exe
NotifyInternetAccessDenied=y
NotifyStartRunAccessDenied=y
CopyLimitKb=128000
Template=Firefox_Cookies_DirectAccess
Template=Firefox_Session_DirectAccess
Template=Firefox_Bookmarks_DirectAccess
Template=Firefox_Profile_DirectAccess
Template=Firefox_Phishing_DirectAccess
Template=LastPass
Template=Local_Secure_Directories
Template=Local_AutoIgnore_Directories
Template=Local_Recover_Folders
Template=AutoRecoverIgnore
Template=BlockPorts
Template=LingerPrograms
OpenProtectedStorage=y
OpenCredentials=y
ClosedFilePath=!<InternetAccess>,InternetAccessDevices
ClosedFilePath=D:\
ClosedFilePath=E:\
ClosedFilePath=!firefox.exe,F:\
ClosedFilePath=*\GEARAspiWDMDevice*
OpenFilePath=firefox.exe,%Local AppData%\Mozilla\Firefox\
OpenFilePath=firefox.exe,%AppData%\Mozilla\Firefox\Crash Reports\
OpenFilePath=wmplayer.exe,C:\Program Files\Windows Media Player\
OpenFilePath=WerFault.exe,C:\Users\SYSOP\AppData\Local\
OpenFilePath=F:\DNL\
OpenFilePath=F:\GAMES\
OpenFilePath=F:\INSTALL\
OpenFilePath=F:\LIBRARY\
OpenFilePath=F:\MEDIA\
OpenFilePath=F:\SCREENSHOTS\
ReadFilePath=C:\WINDOWS
ReadFilePath=G:\
LingerProcess=firefox.exe
LingerProcess=wuauclt.exe
LingerProcess=rundll.exe
LeaderProcess=<FirefoxPrograms>
AutoRecover=y
AutoDelete=y
NeverDelete=n
ProcessGroup=<InternetAccess>,firefox.exe,plugin-container.exe,updater.exe,xpicleanup.exe,xpicle~1.exe,crashreporter.exe,crashr~1.exe,iedw.exe,container.exe,icwconn1.exe,icwconn2.exe,icwrmind.exe,icwtutor.exe,inetwiz.exe,isignup.exe,wuauclt.exe,jqsnotify.exe,dwwin.exe,SandboxieBITS.exe,SandboxieCrypto.exe,SandboxieDcomLaunch.exe,SandboxieEventSys.exe,SandboxieWUAU.exe,SWDNLD.EXE,SwHelper_1205146.exe,xpnetdiag.exe,wmplayer.exe,Foxit Reader.exe,Foxit Updater.exe,GenuineCheck.exe,dllhost.exe,WerFault.exe,java.exe,setup_wm.exe,BitTorrent.exe,notepad++.exe,DNTPService.exe,SwHelper_1214154.exe,wermgr.exe,FlashPlayerPlugin_26_0_0_137.exe,explorer.exe
Thank you for your time and attention to this issue.