MSI ERROR 1601: Windows Installer can not be accessed.

Question

MSI ERROR 1601: Windows Installer can not be accessed.

Answer 1

1

CLick your Start Button, then just type services and press Enter.

In the resulting Services utility, scroll down to find Windows Installer.

Set the Startup type of that service to Manual, then click the Start button to start the service and check if that resolves the problem

2

If not, click your Start Button, then just type cmd and on the resulting list, right click Command Prompt and select 'Run as Administrator.

Run this command in Command Prompt and press Enter:

msiexec.exe /unreg

Run this command in Command Prompt and press Enter:

msiexec /regserver

Then, close Command Prompt and check if that resolves the problem.

Answer 2

MSI Error 1601 indicates that the Windows Installer service cannot be accessed. This error can occur for several reasons, including:

1. Windows Installer Service Not Running: The Windows Installer service may not be running. You can check this by going to the Services application and ensuring that the Windows Installer service is started.
2. Corrupted Windows Installer: The Windows Installer may be corrupted. You may need to repair or reinstall it.
3. System File Corruption: Corrupted system files can also lead to this error. Running the System File Checker (SFC) tool can help identify and repair corrupted files.
4. Registry Issues: There may be issues with the registry entries related to the Windows Installer. Editing the registry can be risky, so it's advisable to back it up before making any changes.

To resolve the issue, you can try the following steps:

• Restart the Windows Installer service.
• Run the SFC tool by executing sfc /scannow in the Command Prompt.
• If the problem persists, consider reinstalling the Windows Installer or restoring your system to a previous state.

If you continue to experience issues, you may want to consult additional resources or support for further assistance.