2026-02 Security Update (KB5077181) (26100.7840) Window update issue

Question

Hi, I just bought a new Samsung Galaxy Book5 360 laptop. I started with Window Updates first, all good until I found that the update for "2026-02 Security Update (KB5077181) (26100.7840)" stopped at 5% downloading progress then never moved forward anymore. How can I resolve this issue? I am just a normal user and don't have too much IT background and knowledge.

Thanks.

Cheers, Helen

Answer 1

Hello, thank you for reaching out to Microsoft Q&A.

If the update remains stuck at 5% for more than an hour or two, first check that your internet connection is working. Then, restart your computer and check for updates again. If the update still does not progress, you can try the following steps:

Run the Windows Update Troubleshooter:

1. Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters > Windows Update. Run the troubleshooter.
2. Once the troubleshooter is finished running, restart your computer and install the updates.

Run the System File Checker Utility Scan:

1. Open the Command Prompt (Administrator) Window.
2. Run the commands one by one and click Enter for each command.

dism /online /Cleanup-Image /StartComponentCleanup
dism /online /Cleanup-Image /ScanHealth
dism /online /Cleanup-Image /CheckHealth
dism /online /Cleanup-image /RestoreHealth

Sfc /scannow

Once completed, restart your computer and install the updates again.

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Answer 2

If your Windows Update is stuck at 5% for the "2026-02 Security Update (KB5077181) (26100.7840)", you can try the following steps to resolve the issue:

1. Restart Your Computer: Sometimes, a simple restart can help clear any temporary issues that may be causing the update to hang.
2. Run Windows Update Troubleshooter: Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters > Windows Update. Run the troubleshooter and follow the prompts to fix any detected issues.
3. Check Your Internet Connection: Ensure that your internet connection is stable. A weak or intermittent connection can cause updates to stall.
4. Clear the Windows Update Cache: You can clear the update cache by stopping the Windows Update service, deleting the contents of the SoftwareDistribution folder, and then restarting the service. Here’s how:
   • Press Windows Key + R, type services.msc, and press Enter.
   • Find Windows Update, right-click it, and select Stop.
   • Navigate to C:\Windows\SoftwareDistribution\Download and delete all files in this folder.
   • Go back to the Services window, right-click Windows Update, and select Start.
5. Manually Install the Update: If the update continues to fail, you can manually download and install it from the Microsoft Update Catalog.
6. Check for Other Updates: Ensure that there are no other pending updates that might be causing a conflict. Sometimes, installing other updates first can help.
7. Reset Windows Update Components: If all else fails, you can reset Windows Update components using Command Prompt. This is a more advanced step, so if you're not comfortable, you might want to seek assistance.

If these steps do not resolve the issue, consider reaching out to Microsoft Support for further assistance.

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References:

• Windows Update hangs and new updates are uninstalled after a restart