754293 - Firefox picks outdated version of flash plugin dll

Status: RESOLVED DUPLICATE of bug 686335

(Core Graveyard :: Plug-ins, defect)

Description

[GWu]

User Agent: Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20100101 Firefox/12.0
Build ID: 20120420145725

Steps to reproduce:

Updated Flash Plugin


Actual results:

Old version is still used instead of new


Expected results:

new version used

see http://forums.adobe.com/thread/999038 for a detailled description. IMHO this is not Adobe's fault but caused by Firefox behaviour to pick the dll alphabetically.

Text copied from link above:
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The problem comes because Firefox is using a QueryDirectory command with '*' when it looks in the C:\WINDOWS\system32\Macromed\Flash directory for the DLL.  This returns items alphabetically.  It must be looking for the NPSWF32 prefix, so the LOWEST version number will always win!

 

To prove this, I made a copy of NPSWF32_11_2_202_235.dll and named it NPSWF32_0.dll.  So now I'm looking at the following directory entries.

 

FlashInstall.log

flashplayer.xpt

FlashPlayerUpdateService.exe

FlashUtil32_11_2_202_235_Plugin.exe

mms.cfg

NPSWF32_0.dll

NPSWF32_11_2_202_235.dll

 

Note that alphabetically, my _0 copy is above the real copy.  I use ProcMon to spy on Firefox once again.  And Firefox goes and loads NPSW32_0.dll into the plugin-container.exe command line!  This is despite the registry having no mention of this file, and all registry entries that refer to flash have NPSWF32_11_2_202_235.dll in them.
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