Easily Fixed - Error 1628 Failed to Complete Installation

Troubleshooting Error 1628: Failed to Complete Installation

Encountering installation, repair, or update errors is common. This guide addresses error 1628 ("failed to complete installation," "failed to complete script based install," or similar messages related to InstallShield, sometimes accompanied by error 1607). These errors can arise from various sources, including faulty installation files, antivirus/firewall interference, conflicting temporary files, or corrupted uninstallation logs. Before proceeding, consider backing up important data using software like MiniTool ShadowMaker.

Solution 1: Rename the InstallShield Folder

Renaming the InstallShield folder can resolve conflicts.

1. Open File Explorer (Win E).
2. Navigate to: C:\Program Files\Common Files.
3. Rename the "InstallShield" folder to "InstallShield1".

Solution 2: End the idriver.exe Process

A corrupted uninstallation log can cause error 1628. Ending the idriver.exe process might help.

1. Open Task Manager (right-click taskbar).
2. Locate idriver.exe in the Processes tab.
3. If found, right-click and select "End task".

Solution 3: Delete Temporary Files

Conflicting temporary files can interfere with installations.

1. Open File Explorer.
2. Navigate to C:\Windows\Temp.
3. Select all files (Ctrl A) and delete them.

Solution 4: Perform a Clean Boot

A clean boot minimizes startup programs and drivers, isolating potential conflicts.

1. Open the Run box (Win R), type msconfig, and press Enter.
2. In the Services tab, check "Hide all Microsoft services" and click "Disable all".
3. In the Startup tab, click "Open Task Manager".
4. End unnecessary startup tasks (right-click, "End task").
5. Click "Apply" and "OK", then restart your computer.

Solution 5: Configure Software Restriction Policies

Insufficient memory for installer verification can trigger this error. Adjusting software restriction policies may be necessary.

1. Open the Run box (Win R), type secpol.msc, and press Enter.
2. Navigate to Security Settings > Software Restriction Policies.
3. If no policies are defined, right-click "Software Restriction Policies" and select "New Software Restriction Policies".
4. Select "All users except local administrators".
5. Save changes and restart your computer.

Conclusion

These steps offer potential solutions for error 1628. Remember to back up your data before attempting any of these solutions. If the problem persists, further investigation may be required, potentially involving contacting software support.

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