Some Windows 11 users report a strange issue where the Command Prompt window pops up briefly and then closes. This can happen randomly or when trying to launch CMD directly. The problem may be caused by malware, corrupted system files, registry issues, or even antivirus interference. Here are some reliable ways to fix it.
1. Run a Malware Scan
Malware can trigger background scripts that cause the CMD window to flash and close. Run an offline scan using Microsoft Defender or try a portable malware removal tool like Dr.Web CureIt. You can also explore free one-time malware scanners for a second opinion.
2. Run System File Checker (SFC)
Windows includes built-in repair tools. Open Command Prompt as Administrator and run:
sfc /scannowThis scans and repairs corrupted system files. If problems remain, follow up with DISM as explained in our guide.
3. Check Your Antivirus Software
Sometimes, overprotective antivirus programs can block or interfere with CMD. Temporarily disable your third-party antivirus and test again. If CMD now works, consider switching to a lighter antivirus like ClamWin or using built-in Windows Defender.
4. Keep Windows Updated
Always make sure your PC is up to date. Go to Settings → Windows Update → Check for updates. Bug fixes and patches often resolve background script issues that trigger CMD flashes.
Pros
- Step-by-step beginner-friendly methods.
- Uses built-in Windows tools first.
- Suggests free malware scanners for extra security.
Considerations
- If malware is deeply rooted, a clean install may be required.
- Disabling antivirus is only for troubleshooting – re-enable protection immediately.
FAQs
Why does Command Prompt open and close immediately?
This often happens due to background tasks, registry corruption, or malware creating hidden scripts.
Can I remove CMD from startup?
Yes. Check the Task Scheduler for suspicious tasks, and also review startup items in Task Manager.
Is it safe to disable antivirus software while testing?
Temporarily, yes, but do not leave your system unprotected. Always re-enable it after checking CMD.
Do I need third-party tools?
Not always. Start with built-in tools like SFC/DISM and Defender. Only use extra scanners if the problem persists.
Conclusion
If the Command Prompt keeps popping up and closing on Windows 11, don’t panic. In most cases, the issue is caused by malware, corrupted system files, or a misconfigured startup task. By running a thorough malware scan, repairing system files with SFC/DISM, checking antivirus settings, and keeping Windows updated, you can usually resolve the problem quickly. If the issue persists, dig into Task Scheduler for suspicious tasks or consider a clean system restore. With these steps, you should be able to enjoy a smoother, interruption-free Windows 11 experience.