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 11
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. In some cases, background processes interfere with installation files, preventing the setup from completing properly.
1. Close any open programs
2. Click Start > Power
3. 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. This usually happens when administrative access is restricted or required files cannot be updated during installation.
1. Right-click the setup file or installer
2. Select Run as administrator
3. Click Yes on the User Account Control prompt
4. 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Outdated Windows components can cause compatibility issues during setup. Missing system updates may prevent the installer from running properly or completing the installation process.
1. Press Windows + I to open Settings
2. Go to Windows Update
3. Click Check for updates
4. Install all available updates
5. Restart your PC
After updating, retry the setup process.
4. Check Your Internet Connection
Some setups require downloading additional files during installation, so a weak or unstable internet connection can interrupt the process and cause the setup to fail. To avoid this, make sure your device is connected to a stable network before starting the installation. If you are using a VPN, temporarily disable it, as it may interfere with the download process. Also, avoid switching between Wi-Fi and mobile data or changing networks while the setup is running.
If the connection still seems unstable, restart your router and wait for the network to stabilize. Once you have a reliable internet connection, try running the setup again.
5. Temporarily Disable Antivirus or Security Software
Third-party antivirus or security tools can sometimes block setup files or installation scripts, which may result in an incomplete or failed installation. To prevent this, temporarily disable your third-party antivirus software before starting the setup. If your security program includes real-time protection, turn it off as well, as it may interfere with the installation process.
After disabling the antivirus, run the setup again and complete the installation. Once the process is finished, make sure to re-enable your antivirus protection to keep your system secure. Also, only download installers from trusted and official sources to avoid security risks while antivirus protection is temporarily disabled.
6. Check Available Disk Space
Insufficient disk space can prevent setup processes from completing. When the system runs low on storage, required installation files may fail to copy or unpack properly during setup.
1. Open This PC
2. Check free space on the system drive (usually C:)
3. 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. Important Windows components required during installation may not function correctly, causing the setup process to stop unexpectedly.
1. Press Windows + S, type cmd
2. Right-click Command Prompt and select Run as administrator
3. Run the following command and press Enter:
sfc /scannow
4. After it completes, run these commands one by one:
DISM /Online /Cleanup-Image /CheckHealthDISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth5. 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. It records system and installation errors that can help identify the exact issue interrupting the setup process.
1. Press Windows + X
2. Select Event Viewer
3. Go to Windows Logs > Application
4. Look for recent Error or Warning entries related to setup
5. 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.
1. Press Windows + R, type msconfig, and press Enter
2. Go to the Services tab
3. Check Hide all Microsoft services
4. Click Disable all
5. Open Task Manager > Startup
6. Disable all startup apps
7. Restart your PC
8. 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 lead to partial or failed installations. If the installer was not downloaded properly, some required files may be missing or damaged, preventing the setup from completing successfully. To fix this, delete the existing installer from your system and download a fresh copy from the official source. Make sure the download finishes completely before opening the file.
After downloading the new installer, right-click it and select Run as administrator to ensure the setup has the required permissions. It is also recommended to avoid using installation files from third-party websites or unreliable sources, as they may contain modified or incomplete setup packages.
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.
