I'm having the same problem on several machines. And I more and more get the impression that there is something wrong with Windows 7 ACL logic... Similar to the case I've described here , today, on another machine, I'm facing the problem that I can't delete/rename files from the C:\Windows\SysWOW64\Macromed\Flash\ directory. Until yesterday this was no problem at all (I always rename the DLLs to disable Flash until I occasionally need it). Today, Adobe Updater installed a new Flash version into that directory and now I can't rename/delete anything in this directory anymore! Although I should be able to do that, because: I'm an Administrator on my machine and I'm a member of the Administrators group I'm the owner of all files in this directory What I get is a dialog box telling me I "need privilegues to continue with this process": Microsoft's SysInternal AccessEnum returns following results: Path Read Write Deny C:\Windows\SysWOW64\Macromed Administrators, Users, NT SERVICE\TrustedInstaller Administrators, NT SERVICE\TrustedInstaller C:\Windows\SysWOW64\Macromed\Flash\Flash10d_.ocx Administrators, Users Administrators Everyone C:\Windows\SysWOW64\Macromed\Flash\Flash10e.ocx Administrators, Users Administrators Everyone C:\Windows\SysWOW64\Macromed\Flash\Flash10e_.ocx Administrators, Users Administrators Everyone C:\Windows\SysWOW64\Macromed\Flash\FlashUtil10e.exe Administrators, Users Administrators Everyone I strongly suspect that something is rotten in the state of Denmark... Any ideas or suggestions? Thanks, Axel Dahmen

I have had exactly the same problem. This worked for me: Open a command prompt with admin rights, take ownership of the folder you want to delete, and use icacls to grant yourself full rights. In addition, the Macromed folder is silly and has a deny permission for "everyone", so you have to remove that as well (step 6 below does this). Steps: Click start Type cmd Press ctrl+shift+enter and accept the UAC prompt if necessary. Your command prompt should start in C:\Windows\System32. If not, STOP, you did not successfully launch the command prompt as administrator. Type takeown /F C:\Windows\SysWOW64\Macromed /R Type icacls C:\Windows\SysWOW64\Macromed /T /remove everyone Type icacls C:\Windows\SysWOW64\Macromed /T /grant %username%:F Type rd C:\Windows\SysWOW64\Macromed/s/q