Error:

Internal error 2503

Snapshot:

Workaround 1:

Unregister Windows Installer, and then re-register Windows Installer. To do this, follow these steps:

1. 1. On the “Start” menu, click “Run.
2. 2. In the “Open” box, type “msiexec /unreg“, and then press ENTER.
3. 3. On the “Start” menu, click “Run”.
4. 4. In the “Open” box, type “msiexec /regserver“, and then press ENTER.

Workaround 2:

1. Check permissions within the Installer folder. To do this, follow these steps.
2. Click on Start and in the Start Search bar > type in > c: /windows/installer.
3. Right click on c: /windows/installer at the top under programs and click properties.
4. Click on the security tab > Verify if System and Administrator account has Full access permissions.
5. The Everyone account should have read and execute permissions, List Folder Contents, and Read.

Workaround 3:

Log out of windows and log in as Administrator.