Many Windows 11 users report that KB5074105 fails to install, gets stuck at a certain percentage, or rolls back after restart. Although this update is a preview update, installation problems can still disrupt normal PC usage.
Fortunately, you can fix this issue using proven solutions. Below, you’ll find clear explanations and easy steps to install KB5074105 successfully.
Why Windows 11 KB5074105 Is Not Installing
Before applying fixes, it helps to understand the causes. In most cases, this issue happens due to system conflicts.
Common reasons include:
- Corrupted Windows Update files
- Insufficient disk space
- Pending system restart
- Damaged system files
- Conflicting drivers or software
- Interrupted internet connection
- Windows Update services not running
As a result, the update either fails or loops endlessly.
Fix 1: Restart Your PC First
Before trying advanced fixes, restart your computer. Often, a pending restart blocks new updates.
Steps:
- Save all work
- Restart Windows
- Try installing KB5074105 again
Sometimes, this simple step solves the issue instantly.
Fix 2: Check Available Disk Space
Windows updates require free storage to install correctly.
Steps:
- Open This PC
- Ensure at least 15–20 GB free on drive C
- Delete temporary files if needed
After freeing space, retry the update.
Fix 3: Run Windows Update Troubleshooter
Next, use the built-in troubleshooter to detect update errors.
Steps:
- Press Windows + I → System
- Go to Troubleshoot → Other troubleshooters
- Run Windows Update
- Apply fixes and restart
Consequently, most update-related problems get resolved automatically.
Fix 4: Reset Windows Update Components
If the update still fails, resetting update services helps.
Steps:
- Open Command Prompt (Admin)
- Run the following commands one by one:
net stop wuauserv
net stop bits
net stop cryptsvc
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start bits
net start cryptsvc
Then restart your PC and check for updates again.
Fix 5: Repair System Files
Corrupted system files often prevent updates from installing.
Steps:
- Open Command Prompt (Admin)
- Run:
sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth
Once completed, reboot your PC.
Fix 6: Install KB5074105 Manually
If Windows Update fails, manual installation works well.
Steps:
- Visit Microsoft Update Catalog
- Search for KB5074105
- Download the correct version for your system
- Run the installer
- Restart Windows
As a result, the update installs without relying on Windows Update services.
Fix 7: Disable Antivirus Temporarily
Sometimes, third-party antivirus software blocks updates.
Steps:
- Temporarily disable antivirus
- Install KB5074105
- Re-enable protection after installation
However, avoid browsing the internet while antivirus is disabled.
Fix 8: Perform a Clean Boot
Background services can interfere with update installation.
Steps:
- Press Windows + R, type
msconfig - Go to Services → Check Hide Microsoft services
- Click Disable all
- Restart PC and install the update
After installation, re-enable services normally.
Should You Install KB5074105?
KB5074105 is a preview update, which means it’s optional. Therefore, if your PC works fine, skipping this update is perfectly safe. Waiting for the next stable cumulative update is often the better choice.
Frequently Asked Questions (FAQs)
Why does KB5074105 keep failing to install?
Usually due to corrupted update files, low storage, or system file damage.
Is KB5074105 mandatory?
No. Preview updates are optional and not required for security.
Can I skip KB5074105?
Yes. You can pause updates or wait for the stable release.
Will manual installation fix the issue?
Yes, in most cases, manual installation works successfully.
Conclusion
When Windows 11 KB5074105 is not installing, the problem usually lies in update services, system files, or background conflicts. By restarting your PC, repairing system files, resetting Windows Update, or installing the update manually, you can fix the issue quickly. However, since this is a preview update, skipping it is also a valid option.
🖥️ Keep Windows stable by updating wisely.
