Issue Description
If Windows Installer service is not running, MSI-based installations will fail.
Common Causes
- Service disabled
- Corrupt installer registration
Step-by-Step Solution
Step 1: Start Installer Service
- Press Windows + R → services.msc
- Find Windows Installer
- Set Startup type to Manual
- Click Start
Step 2: Re-register Installer
- Open Command Prompt (Admin)
- Run:
msiexec /unregister
msiexec /regserver
Step 3: Restart PC
- Restart Windows
- Retry installation
Explore Further
- Check system integrity using SFC
Prevention & Best Practices
Do not disable core Windows services.