I have the following mms.cfg in <ul> <li><code>%localappdata%\Google\Chrome\User Data\Default\Pepper Data\Shockwave Flash\System\mms.cfg</code></li> <li><code>%localappdata%\Microsoft\Edge\User Data\Default\Pepper Data\Shockwave Flash\System\mms.cfg</code></li> <li><code>%windir%System32\Macromed\Flash\mms.cfg</code></li> <li><code>%windir%\SysWOW64\Macromed\Flash\mms.cfg</code></li> </ul> <pre class="prettyprint"><code>EOLUninstallDisable=1 SilentAutoUpdateEnable=0 EnableAllowList=1 AutoUpdateDisable=0 AllowListUrlPattern=http://localhost/flash/ ErrorReportingEnable=1 EnableInsecureLocalWithFileSystem=1 </code></pre> With this after I set my PC date to something in 2021. I'm able to run Flash in <ul> <li>Chrome - Which uses the config in <code>%localappdata%\Google\Chrome\User Data\Default\Pepper Data\Shockwave Flash\System\mms.cfg</code> </li> <li>Edge Chromium - Which uses the config in <code>%localappdata%\Microsoft\Edge\User Data\Default\Pepper Data\Shockwave Flash\System\mms.cfg</code> </li> <li>Firefox - <code>%windir%System32\Macromed\Flash\mms.cfg</code> </li> </ul> Based on my understanding IE11 should be using the one from <code>%windir%System32\Macromed\Flash\mms.cfg</code> but for whatever reason it seems like it's ignoring it and the settings in this file have no effect and flash is still disabled. <img src="https://i.stack.imgur.com/5m0f0.jpg" alt="enter image description here"> Just to be on the 100% sure that IE uses that config file I've ran ProcMon and it seems like IE is actually opening the file as you can see in the picture. <img src="https://i.stack.imgur.com/Z1iNa.png" alt="enter image description here"> My question is why is internet explorer ignoring this? And what can I do about it? Other useful info: <ul> <li>Firefox and Chromium browsers use 32.0.0.433</li> <li>IE11 uses 32.0.0.387 which is the windows embedded version of flash.</li> <li>Tested on <ul> <li>Windows 10 Pro 10.0.18362</li> <li>Windows 10 Pro 10.0.19041</li> <li>Windows 10 Home 10.0.18362</li> </ul> </li> <li>I took Flash player version 32.0.0.330 from an older version of Windows and I didn't even get the EOL behavior. This leads me to believe that this is a FP version issue and that version 32.0.0.387 which is distributed by MS might not support <code>AllowListUrlPattern</code>.</li> </ul> Things I've tried and didn't work include: <ul> <li>Restarting the machine</li> <li>Setting the encoding of the .cfg to UTF-8.</li> </ul>

I tested this on Windows 10 Enterprise 10.0.19041 and Flash Player 32.0.0.387 with same results. I then ran Windows updates which installed Flash Player 32.0.0.445. https://support.microsoft.com/en-us/help/4580325/security-update This version respected <code>mms.cfg</code> settings as expected. My <code>mms.cfg</code> was placed in <code>%windir%\SysWOW64\Macromed\Flash</code> and <code>%windir%\System32\Macromed\Flash</code> and it looks like this: <pre class="prettyprint"><code>EOLUninstallDisable=1 EnableAllowList=1 AllowListUrlPattern=*://*.mydomain.com/ AllowListUrlPattern=*://localhost/ AllowListUrlPattern=*://localhost:5311/ </code></pre> Also, having played around with different dates I've determined the cut off date to be 01/12/2021.

Take a loot at article here https://community.adobe.com/t5/flash-player/ie-11-ignores-allowlisturlpattern-in-mms-cfg/td-p/11426041?page=1 Basically, try change the properties names: <ul> <li> <code>EnableAllowList</code> into <code>EnableWhiteList</code> </li> <li> <code>AllowlistPreview</code> into <code>WhitelistPreview</code> </li> <li> <code>AllowListUrlPattern</code> into <code>WhitelistUrlPattern</code> </li> </ul>

I was having the same problem in <code>IE 11</code> and found the answer at the this page. In short, using the <code>EnableWhitelist</code>, <code>WhitelistPreview</code>, <code>WhitelistUrlPattern</code> flags instead of <code>EnableAllowList</code>, <code>AllowListPreview</code>, <code>AllowListUrlPattern</code> in the <code>mms.cfg</code> file worked for me. My <code>mms.cfg</code> file is in below path: <pre class="prettyprint"><code>C:\Windows\SysWOW64\Macromed\Flash </code></pre> Thanks

Internet explorer ignores flash mms.cfg settings

Tags:

windows

flash

internet-explorer

windows-10

internet-explorer-11

I have the following mms.cfg in

%localappdata%\Google\Chrome\User Data\Default\Pepper Data\Shockwave Flash\System\mms.cfg
%localappdata%\Microsoft\Edge\User Data\Default\Pepper Data\Shockwave Flash\System\mms.cfg
%windir%System32\Macromed\Flash\mms.cfg
%windir%\SysWOW64\Macromed\Flash\mms.cfg

EOLUninstallDisable=1
SilentAutoUpdateEnable=0
EnableAllowList=1
AutoUpdateDisable=0
AllowListUrlPattern=http://localhost/flash/
ErrorReportingEnable=1
EnableInsecureLocalWithFileSystem=1

With this after I set my PC date to something in 2021. I'm able to run Flash in

Chrome - Which uses the config in %localappdata%\Google\Chrome\User Data\Default\Pepper Data\Shockwave Flash\System\mms.cfg
Edge Chromium - Which uses the config in %localappdata%\Microsoft\Edge\User Data\Default\Pepper Data\Shockwave Flash\System\mms.cfg
Firefox - %windir%System32\Macromed\Flash\mms.cfg

Based on my understanding IE11 should be using the one from %windir%System32\Macromed\Flash\mms.cfg but for whatever reason it seems like it's ignoring it and the settings in this file have no effect and flash is still disabled. enter image description here

Just to be on the 100% sure that IE uses that config file I've ran ProcMon and it seems like IE is actually opening the file as you can see in the picture. enter image description here

My question is why is internet explorer ignoring this? And what can I do about it? Other useful info:

Firefox and Chromium browsers use 32.0.0.433
IE11 uses 32.0.0.387 which is the windows embedded version of flash.
Tested on
- Windows 10 Pro 10.0.18362
- Windows 10 Pro 10.0.19041
- Windows 10 Home 10.0.18362
I took Flash player version 32.0.0.330 from an older version of Windows and I didn't even get the EOL behavior. This leads me to believe that this is a FP version issue and that version 32.0.0.387 which is distributed by MS might not support AllowListUrlPattern.

Things I've tried and didn't work include:

Restarting the machine
Setting the encoding of the .cfg to UTF-8.

916

asked Sep 08 '20 18:09

Bobby Tables

3 Answers

I tested this on Windows 10 Enterprise 10.0.19041 and Flash Player 32.0.0.387 with same results.

I then ran Windows updates which installed Flash Player 32.0.0.445. https://support.microsoft.com/en-us/help/4580325/security-update

This version respected mms.cfg settings as expected.

My mms.cfg was placed in %windir%\SysWOW64\Macromed\Flash and %windir%\System32\Macromed\Flash

and it looks like this:

EOLUninstallDisable=1
EnableAllowList=1
AllowListUrlPattern=*://*.mydomain.com/
AllowListUrlPattern=*://localhost/
AllowListUrlPattern=*://localhost:5311/

Also, having played around with different dates I've determined the cut off date to be 01/12/2021.

189

answered Oct 21 '22 19:10

Ilya

Take a loot at article here https://community.adobe.com/t5/flash-player/ie-11-ignores-allowlisturlpattern-in-mms-cfg/td-p/11426041?page=1

Basically, try change the properties names:

EnableAllowList into EnableWhiteList
AllowlistPreview into WhitelistPreview
AllowListUrlPattern into WhitelistUrlPattern

answered Oct 21 '22 17:10

ariefcfa

I was having the same problem in IE 11 and found the answer at the this page.

In short, using the EnableWhitelist, WhitelistPreview, WhitelistUrlPattern flags instead of EnableAllowList, AllowListPreview, AllowListUrlPattern in the mms.cfg file worked for me.

My mms.cfg file is in below path:

C:\Windows\SysWOW64\Macromed\Flash

Thanks