This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Problem with Adobe Shockware Flash Plugin "Message from dll" "Can't create FileMapping"

  • 4 replies
  • 9 have this problem
  • 6 views
  • Last reply by philipp

more options

Hi,

I have a problem with Adobe Shockware Flash 11.9.900.152 Plugin on Mozilla Firefox 25.0.1 on Windows 7 Ultimate (x64).

Every first time I start Firefox and enter a site that required flash player, I get this message.

http://i.imgur.com/rQyXONx.png

"Message from dll" "Can't create FileMapping"

The message only display in the first time I run Firefox after startup then enter a site that require flash player. It won't display again until I restart my computer or log out then log in my Windows account again.

I tried to disable/uninstall Adobe Shockware Flash Plugin and restart then run Firefox again, the message doesn't display anymore.

But when I enable/reinstall Adobe Shockware Flash Plugin and restart then run Firefox again, the message display again.

I tried to uninstall Firefox + Adobe Shockware Flash Plugin and reinstall them. But the problem still happen.

Only Firefox got the problem, Internet Explorer and Google Chrome doesn't.

Thanks in advance!!

Hi, I have a problem with Adobe Shockware Flash 11.9.900.152 Plugin on Mozilla Firefox 25.0.1 on Windows 7 Ultimate (x64). Every first time I start Firefox and enter a site that required flash player, I get this message. http://i.imgur.com/rQyXONx.png "Message from dll" "Can't create FileMapping" The message only display in the first time I run Firefox after startup then enter a site that require flash player. It won't display again until I restart my computer or log out then log in my Windows account again. I tried to disable/uninstall Adobe Shockware Flash Plugin and restart then run Firefox again, the message doesn't display anymore. But when I enable/reinstall Adobe Shockware Flash Plugin and restart then run Firefox again, the message display again. I tried to uninstall Firefox + Adobe Shockware Flash Plugin and reinstall them. But the problem still happen. Only Firefox got the problem, Internet Explorer and Google Chrome doesn't. Thanks in advance!!

All Replies (4)

more options

hello hinotama, based on your screenshot it rather looks like this error message is coming from the flash plugin process itself & not from firefox.

to troubleshoot such an issue, it would be best to contact adobe's support & file a bug report at bugbase.adobe.com (choose "Adobe Flash Player" as the product & "Browser Integration" as the product area), since they will have a better understanding of the internals of the plugin & therefore may know what might be at the root of the problem you were seeing and are the only ones able to fix it.

more options

Did you uninstall the Flash player as well?

Note that this will remove all installed Flash players.

more options

Thanks for your replies!

@philipp: As you have suggested, I've submitted a bug and now I'm waiting for it to be verified.

@cor-el: Yes, I tried that too. But the problem still occurred after I reinstall it again.

more options

thank you for reporting back - for cross-reference, here's the filed bug at adobe: https://bugbase.adobe.com/index.cfm?event=bug&id=3681184