Seeing the error message “Sorry, only part of the setup completed successfully” during installation or setup on Windows can be confusing and frustrating. This message usually appears when Windows is setting up a feature, app, driver, update, or system component but fails to finish all required steps. As a result, the process ends halfway, leaving the setup incomplete.
Although the message sounds vague, it usually points to permission issues, corrupted system files, incomplete updates, network problems, or conflicts with existing software—not a permanent system failure. In this guide, we will walk you through all the effective ways to fix the Sorry, only part of the setup completed successfully error on Windows PCs and laptops.
Fix “Sorry, Only Part of the Setup Completed Successfully” on Windows
Follow the troubleshooting methods below one by one. In most cases, one of these fixes will allow the setup to complete properly.
1. Restart Your Windows PC
A partial setup can occur due to temporary system glitches or locked background services.
- Close any open programs
- Click Start > Power
- Select Restart
After rebooting, try running the setup or installation again.
2. Run the Setup as Administrator
If Windows does not have sufficient permissions to modify system files, the setup may stop midway.
- Right-click the setup file or installer
- Select Run as administrator
- Click Yes on the User Account Control prompt
- Follow the on-screen instructions
Running the installer with elevated permissions often resolves incomplete setup issues.
3. Make Sure Windows Is Fully Updated
Outdated Windows components can cause compatibility issues during setup.
- Press Windows + I to open Settings
- Go to Windows Update
- Click Check for updates
- Install all available updates
- Restart your PC
After updating, retry the setup process.
4. Check Your Internet Connection
Some setups require downloading additional files during installation. A weak or unstable connection can interrupt the process.
- Ensure you are connected to a stable network
- Disable VPN temporarily
- Avoid switching networks during setup
- Restart your router if needed
Once the connection is stable, try the setup again.
5. Temporarily Disable Antivirus or Security Software
Third-party antivirus or security tools may block setup files or scripts, causing partial installation.
- Temporarily disable third-party antivirus software
- Turn off real-time protection (if applicable)
- Run the setup again
- Re-enable antivirus after completion
Only download installers from trusted sources when antivirus protection is disabled.
6. Check Available Disk Space
Insufficient disk space can prevent setup processes from completing.
- Open This PC
- Check free space on the system drive (usually C:)
- Free up space by:
- Deleting temporary files
- Emptying Recycle Bin
- Uninstalling unused apps
Aim to have at least 10–20 GB of free space before retrying the setup.
7. Run SFC and DISM Scans
Corrupted or missing system files can cause setup failures.
- Press Windows + S, type cmd
- Right-click Command Prompt and select Run as administrator
- Run the following command and press Enter:
sfc /scannow - After it completes, run these commands one by one:
DISM /Online /Cleanup-Image /CheckHealthDISM /Online /Cleanup-Image /ScanHealthDISM /Online /Cleanup-Image /RestoreHealth - Restart your PC
These scans repair system files required for successful setup.
8. Check Windows Event Viewer for Setup Errors
Event Viewer can provide clues about why the setup failed.
- Press Windows + X
- Select Event Viewer
- Go to Windows Logs > Application
- Look for recent Error or Warning entries related to setup
- Note any error codes or messages
This information can help identify the exact cause of the failure.
9. Try a Clean Boot
Background services or startup apps may conflict with the setup process.
- Press Windows + R, type
msconfig, and press Enter - Go to the Services tab
- Check Hide all Microsoft services
- Click Disable all
- Open Task Manager > Startup
- Disable all startup apps
- Restart your PC
- Run the setup again
If the setup succeeds, a third-party app was likely causing the conflict.
10. Re-download the Setup Files
Corrupted or incomplete setup files can also cause partial installation.
- Delete the existing installer
- Re-download it from the official source
- Make sure the download completes fully
- Run the new installer as administrator
Avoid using installers from untrusted or unofficial websites.
Wrapping Up
With that, we wrap up our detailed guide on fixing the “Sorry, only part of the setup completed successfully” error on Windows. While the message itself does not clearly explain what went wrong, it is most often caused by permission issues, corrupted system files, network interruptions, or software conflicts rather than a serious system problem.
By restarting your system, running the setup as administrator, repairing Windows files, and eliminating conflicts, you should be able to complete the setup successfully.
