Many users report that Windows 11 KB5077181 fails to install, gets stuck at a certain percentage, or shows errors like 0x800f081f, 0x80070002, 0x800f0922, or 0x80073701. In some cases, the update downloads but fails during installation or rolls back after restarting.
This issue usually occurs due to corrupted update files, insufficient system space, damaged system components, or Windows Update service problems. Fortunately, you can fix it using the methods below.
Why Windows 11 KB5077181 Fails to Install
Before applying fixes, it helps to understand the causes.
Common reasons include:
- Corrupted Windows Update cache
- Damaged system files
- Not enough free disk space
- Disabled update services
- Antivirus interference
- Pending updates not installed properly
- .NET Framework issues
Because cumulative updates depend on system integrity, even a small corruption can prevent installation.
Fix 1: Restart Your PC (Simple but Important)
First, restart your computer.
Sometimes Windows Update services get stuck temporarily. After restarting, try installing KB5077181 again.
Fix 2: Run Windows Update Troubleshooter
Windows includes a built-in repair tool.
Steps:
- Open Settings → System → Troubleshoot → Other troubleshooters
- Find Windows Update
- Click Run
After the process finishes, restart your PC and try updating again.
Fix 3: Reset Windows Update Components (Most Effective)
Corrupted update cache is the most common cause.
Steps:
- Open Command Prompt as Administrator
- Run these commands one by one:
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
- Then type:
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
- Restart services:
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
- Restart your PC
Now try installing KB5077181 again.
Fix 4: Run SFC and DISM Scan
Corrupted system files can block updates.
Step 1 – Run SFC:
Open Command Prompt (Admin) and type:
sfc /scannow
Wait for it to complete.
Step 2 – Run DISM:
DISM /Online /Cleanup-Image /RestoreHealth
Restart your PC after completion.
Fix 5: Free Up Disk Space
Windows updates require sufficient free space.
- Ensure at least 20 GB free space
- Use Disk Cleanup
- Delete temporary files
Low storage frequently causes installation failures.
Fix 6: Temporarily Disable Antivirus
Third-party antivirus software can block update files.
- Disable antivirus temporarily
- Restart PC
- Try installing the update
Re-enable protection afterward.
Fix 7: Install Update Manually via Microsoft Update Catalog
If Windows Update fails repeatedly:
- Visit the Microsoft Update Catalog
- Search for KB5077181
- Download the correct version for your system (x64 or ARM)
- Run the downloaded file manually
This method bypasses Windows Update errors.
Fix 8: Check .NET Framework
Some cumulative updates require .NET components.
- Open Control Panel → Programs → Turn Windows features on or off
- Ensure .NET Framework 3.5 and 4.8 are enabled
- Restart your PC
Fix 9: Perform a Clean Boot
Background services may interfere.
Steps:
- Press Windows + R → type msconfig
- Go to Services tab
- Check Hide all Microsoft services
- Click Disable all
- Restart PC
Try installing the update again.
Fix 10: Use Windows 11 Installation Assistant (Last Option)
If nothing works:
- Download Windows 11 Installation Assistant from Microsoft
- Run the tool
- Choose Upgrade this PC
This repairs Windows without deleting files.
Common KB5077181 Error Codes & Meaning
| Error Code | Meaning |
|---|---|
| 0x800f081f | Missing system files |
| 0x80070002 | Corrupted update cache |
| 0x800f0922 | .NET or partition issue |
| 0x80073701 | Component store corruption |
Additional Tips
- Keep your system connected to stable internet
- Avoid shutting down during update
- Install pending updates before KB5077181
- Update BIOS if extremely outdated
Frequently Asked Questions (FAQs)
Why does KB5077181 fail at 100%?
Usually due to corrupted system components or update cache issues.
Is it safe to reset Windows Update components?
Yes, it only refreshes update files.
Can I skip this update?
It is not recommended because cumulative updates include security fixes.
Does manual installation work better?
Yes, in many cases it bypasses Windows Update errors.
Conclusion
The Windows 11 KB5077181 install error typically occurs because of corrupted update cache, damaged system files, or service conflicts. By resetting Windows Update components, running SFC/DISM scans, freeing up space, or installing the update manually, most users can fix the issue successfully.
💻 After applying these solutions, KB5077181 should install without errors.
