error code 2503 when installing programs

I had an upgrade fail so I had to do a custom install of Windows 7. After install I could download/and install things like Shockwave etc., but then I started to get errors 2503 and 2502 when trying to install things like Open Office. Also MS Security Essentials wont install error 0x8007463 (?) or something like that. HAve checked time/date. Have checked permissions on folders. SP1 installed via Windows Update no problem. Then did another custom install and it worked fine for awhile and now it is doing it again!! Is installer bad, updates screwing things up? This seems to be a problem on the boards for the last two years, why no fix???

Question Info

Last updated November 13, 2019 Views 5,156 Applies to:

Hello BigBrad77,


Sorry for the delay in answering your issue.

You can try the following Windows Installer Errors troubleshooting:

You may follow the steps from the below link: How to troubleshoot problems that may occur when you install, uninstall, or upgrade a program on a Windows-based computer:

Step 1: Check the Windows Installer Service.

1. Click Start Orb, in the start search box, type Services and press Enter.
2. Scroll down and find the Windows Installer.  Double-click “Windows Installer” in the Services list.
3. On the General tab, make sure the service is started under “Service status”.
4. If the service is not already running, under Service status, click Start, and then click OK.

Step 2: Unregister and re-register the Windows Installer
1.  Click Start Orb, in the start search box, type MSIEXEC /UNREGISTER, and then click OK . 
2.  Click Start Orb, in the start search box, type MSIEXEC /REGSERVER, and then click OK . After you run this command, the operation is complete.
3. Now, try your installation again. 

Step 3: Clean any pending installations
Check the following registry key and clean any entries in the key that you find:
Go to the Start Orb, type in Regedit and select enter.
If you get the User Account Control dialog box that states, Do you want to allow the following program to make changes to the is computer?, Click yes.

Modifying REGISTRY settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of REGISTRY settings can be solved. Modifications of these settings are at your own risk.

Scroll to: HKEY_LOCAL_MACHINE \Software\Microsoft\Windows\CurrentVersion\Installer\InProgress

Check the following registry key and clean any entries in the key that you find:
HKEY_LOCAL_MACHINE \System\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations

Step 4: Check the permissions
Verify the System has Full Control on the following keys:

HKEY_LOCAL_MACHINE \Software\Microsoft\Windows\CurrentVersion\Installer

Next, restart your computer and try again.

If still having problems, then create a new Administrator User account and see if the problem could be a corrupt user account.

Please reply back and let us know if this helps with your Windows Installer Error.



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