Fix Windows Installer Couldn’t Be Accessed Problem

One of the most common problems with Windows installer is windows installer couldn’t be accessed. I think many friends have encountered this kind of problem. Windows installer is very important for windows users, so when there is a problem it must be removed as soon as possible to ensure windows installer work properly.

If you also have this problem, you will get answer here today. Please follow below isntructions to fix the problem:

Instruction one: Try this registry cleaner  tool to fix the problem. It can fix your windows installer problem automatically. It is really very easy to use:

• 1. Download registry cleaner.
• 2. After installation, start it.
• 3. On the interface, click Quick Scan button.
• 4. When scanning process is finished, click Repair All button

Interested about this? Download from here: http://www.smartpcfixer.com/

Instruction two: Start the Windows Installer service:

• Click Start, type Services.msc and press {ENTER}
• Double-click Windows Installer
• Set the Startup type of Windows Installer to Manual
• Click Start to start the service. Note down the error message if any.
• Click OK.

Instruction three: Unregister and re-register the Windows Installer to do that follow the steps provided below.

• Click Start, click Run, type MSIEXEC /UNREGISTER, and then click OK. Even if you do this correctly, it may look like nothing occurs.
• Click Start, click Run, type MSIEXEC /REGSERVER, and then click OK. Even if you do this correctly, it may look like nothing occurs, or you may briefly see an hourglass.
• After you run this command, the operation is complete.
• Try your Windows Installer-based application again.

Instruction four:

• Click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
• Type the following command, and then press ENTER: sfc /scannow
  [The sfc /scannow command scans all protected system files and replaces incorrect versions with correct Microsoft versions.]
• A message will appear stating that ‘The system scan will begin’. Be patient because the scan may take some time.
• If any files require a replace SFC will replace them. You may be asked to insert your Win7 DVD for this process to continue.
• If everything is okay you should, after the scan, see the following message “Windows resource protection did not find any integrity violations”.
• After the scan has completed, close the command prompt window, restart the computer and check.