For the following operating systems install the correct update/hot fix, restart when done then try installing Adobe once more. For Windows Vista, Windows Vista Service Pack 1 and Windows Server 2008: x86 Platform: Windows6.0-KB942288-v2-x86.msu x64 Platform: Windows6.0-KB942288-v2-x64.msu IA64 Platform: Windows6.0-KB942288-v2-ia64.msu For Windows XP Service Pack 2 and Windows XP Service Pack 3 (32-bit platforms): x86 Platform: WindowsXP-KB942288-v3-x86.exe For Windows Server 2003 Service Pack 1, Windows Server 2003 Service Pack 2 and Windows XP 64-bit Editions: x86 Platform: WindowsServer2003-KB942288-v4-x86.exe x64 Platform: WindowsServer2003-KB942288-v4-x64.exe IA64 Platform: WindowsServer2003-KB942288-v4-ia64.exe For windows 7 you must repair the installer service by doing the following; Method 1; 1. Click Start > All Programs > Accessories. 2. Right-click Command Prompt and choose Run As Administrator. 3. In the Command Prompt window , type sfc /SCANNOW and press Enter. 4. When the system scan completes, type msiexec /unreg in the Command Prompt window, and press Enter. 5. Type msiexec /regserver into the Command Prompt window, and press Enter. This will check for any integrity violations Restart your system 1. Insert the Windows 7 DVD 2. Restart your computer 3. When asked if you want to boot from your DVD drive, do so. 4. Choose your language, click Next. 5. Click 'Repair your computer' 6. Select operating system you want to repair. Windows 7 DVD's; 64bit; http://thepiratebay.org/torrent/5899995 32bit; http://thepiratebay.org/torrent/5903193 Method 2; 1. Click on start and Type regedit on search bar (on RUN command) 2. Navigate to following key HKLM\Software\Microsoft\SQMClient\Windows\DisabledSessions 3. Now delete all string key except default inside “DisabledSessions” Method 3; 1. Click start and type gpedit.msc on search bar or on RUN command 2. Now navigate to Computer Configuration -> Administrative Templates -> System -> Internet Communication Management, and then click Internet Communication settings 3. Locate Turn off Windows Customer Experience Improvement Program, double click or right click edit. 4. Click on Enable. Apply and Ok and close gpedit window.