Cannot install Itunes: ER MSG: cannot access WIndows Installer

My first installation of Itunes did not. Prob. tried to install the 32-bit version on a 64-bit computer.
Now, all I get is error 'Can't access Windows install' message when I trey to update, reinstall or uninstall.
Tried to follow KB support 315346 re-register msiexec for 32 and 64 bit - no idea if it worked but Itunes still generates the error message.

Hello

Please use the Windows Vista Forums.

Start the Windows Installer service

1. Click Start, type Services.msc and press {ENTER}

2. double-click on Windows Installer

3. set the Windows Installer to Manual startup type

4. Click Start to start the service. Note the error message, if any.

5. click on OK.

Make sure that the Windows Installer is not disabled if group policy.

a. Click Start, type gpedit.msc in the search box and press ENTER to open the Group Policy object editor.

b. click on Computer Configuration, administrative templates, click Windows components and then click Windows Installer.

c. double-click Disable Windows Installer on the right side.

d. make sure that the configured or disabled option is selected.

If this does not help, check that the location of the Msiexec.exe in the Windows registry file matches the location of the Msiexec.exe file on the hard drive. To do this, follow these steps:

1. Click Start, type regedit in the search box and press ENTER.

If you are prompted for an administrator password or a confirmation, type the password, or click on allow.

2. in the left pane, click HKEY_LOCAL_MACHINE, click SYSTEM, click on CurrentControlSet, click Services, and then MSIServer.

3. in the right pane, double-click ImagePath.

4. in the dialog box change channels, make sure that the string in the value box contains the correct path of the Msiexec.exe file on the hard drive. This is the way that you saved in step a, a - c. For example, if the Msiexec.exe file is located in the drive: \Windows\System32 hard disk, the correct path of the Msiexec.exe in the zone data file of value is the following path:

drive: \Windows\System32\Msiexec.exe/v

Note in this path, drive is the drive where Windows is installed. The "/v" at the end of the path is a parameter required by Windows Installer. Do not delete it.

5. If the value box does not contain the correct path, type the correct path in the box, and then click OK.

Note Add "/v" until the end of the path, as shown in the previous step.

6. close the registry.

Reregister Windows install.

a. Click Start, type %windir%\system32\msiexec / unregserver in the search box, then press ENTER.

b. type %windir%\system32\msiexec/REGSERVER, and then press ENTER.

WARNING:
Change the settings of the REGISTRY can cause serious problems that may prevent your computer from starting properly. Microsoft cannot guarantee that problems resulting from the REGISTRY settings configuration can be solved. Changes to these settings are at your own risk.

If this does not help, run SFC/scannow to replace all system files missing or corrupt.

This command will launch immediately the System File Checker to scan all protected files and verify their integrity, replace all the files with which it detects a problem.

1. click on start

2. click on all programs

3. click on accessories, then right-click on the command prompt.

4. Select the Security tab and choose "Run as Administrator"

5. click on command prompt

Type SFC/scannow

The System File Checker tool analyzes the system files and replaces incorrect versions of system files by using the correct versions.

Try to install the latest windows installer: http://www.microsoft.com/downloadS/details.aspx?familyid=5A58B56F-60B6-4412-95B9-54D056D6F9F4&displaylang=en

Please let us know if it helps.

Kind regards
Technical support of Microsoft-yama.
Visit our Microsoft answers feedback Forum and let us know what you think.

Tags: Windows

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