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Note: This is only marginally related to another question I asked earlier about Adobe Reader, and only because I am trying to achieve the same basic effect for a different piece of software on the same machine.

I have a computer that is currently at a location that does not yet have internet access. I just performed a clean install of XP SP3, and am in the process of installing some basic software. Among these is the Flash Player plugin for Firefox.

I want to disable automatic updates to the Flash Player plugin. Now, on an internet connected computer, I would go here and uncheck "Notify me when an update to Adobe Flash Player is available."

Without internet access, how can I achieve the same result?

What is the registry key that I need to change to prevent flash player from checking for or installing any automatic updates?

Thank you!

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up vote 2 down vote accepted

See Adobe Flash Player Administration Guide for Flash Player 10 , chapter 3


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Thanks. In summary, it looks like (on XP anyway) I need to create a file "C:WINNT\System32\mms.cfg" that contains a line "AutoUpdateDisable=1" to do what I want. The updated link for the documentation is… – eleven81 Aug 10 '09 at 16:21
That's exactly what I said in my comment two days ago :P – davr Aug 10 '09 at 17:40

The setting seems to be kept somewhere in %APPDATA%\Macromedia\Flash Player\\support\flashplayer\sys\settings.sol which appears to also contain all per-domain settings and who knows what else. Couldn't guarantee what'd happen if you copied it from one machine to another.

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I haven't used Windows much in a while but Firefox will check for updates of addon's itself too - if the flash plugin has any add-on hooks (I'm not sure it does as it doesn't on OS X or Linux) - but other addons & firefox itself will also periodically check for updates. All of this can be disabled and/or have timing changed in Firefox's Preferences > Advanced > Updates.

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Here's an official page from Adobe: Managing Flash Player auto-update. Basically it says you need to create the file C:\WINDOWS\System32\mms.cfg with the following text in it:

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