KB5071959 Not Installing or ESU Enrollment Fails? Fix It Step-by-Step (Windows 10)

If you’re trying to enroll in Windows 10 ESU (Extended Security Updates) and it keeps failing, you’re not alone.

Many users report vague errors like:

“Something went wrong”
“Unable to complete enrollment”

In most cases, the issue is caused by a known problem that Microsoft addressed with KB5071959.

👉 This guide explains exactly what to do.

What Is KB5071959?

KB5071959 is an out-of-band (OOB) update for Windows 10 version 22H2.

👉 Its purpose is simple:

• Fix ESU enrollment failures
• Restore access to future security updates

Key point:

KB5071959 does NOT add features — it fixes the update system itself.

What Problem Does It Fix?

Before this update, some users experienced:

• ESU enrollment wizard fails
• “Out of support” message appears incorrectly
• No security updates after end of support

👉 Even if the system was technically eligible

Who Should Install KB5071959?

✔ You should install it if:

• You are using Windows 10 version 22H2
• ESU enrollment fails
• You plan to continue using Windows 10

❌ You can skip if:

• You already moved to Windows 11
• You do not plan to use ESU

Why ESU Enrollment Fails

This is important 👇

The failure is usually caused by:

• Broken enrollment system components
• Incorrect update state
• Temporary Microsoft-side issue (already fixed)

👉 KB5071959 resolves these internally

How to Fix the Problem (Step-by-Step)

Step 1 — Install KB5071959

Method A: Windows Update (recommended)

1. Open Settings
2. Go to Windows Update
3. Click Check for updates
4. Install KB5071959
5. Restart your PC

Method B: Manual install

If not shown:

• Download from Microsoft Update Catalog
• Install the .msu file
• Restart

Step 2 — Run ESU Enrollment Again

After restart:

1. Go to Windows Update
2. Find Enroll now (or similar)
3. Complete ESU enrollment

👉 This step is required

Step 3 — Check for Updates Again

After enrollment:

1. Click Check for updates
2. Install available security updates

👉 This restores your update flow

How to Confirm It’s Fixed

Check these:

• No more enrollment errors
• Updates download normally
• “Out of support” warning disappears

Optional:

• Press Win + R → winver
• Confirm latest build installed

Quick Fix Summary Table

If It Still Doesn’t Work

Try these safe fixes:

✔ Restart and retry

Simple but effective

✔ Repair system files

Run:

DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow

✔ Check Windows version

Must be:

👉 Windows 10 22H2

Important Notes

• KB5071959 is safe to install
• It does not include security fixes itself
• It enables future updates

Should You Stay on Windows 10?

Short answer:

👉 Only if necessary

• ESU is temporary
• Windows 11 is the long-term solution

Final Summary

If ESU enrollment fails:

👉 Fix it like this:

1. Install KB5071959
2. Restart
3. Run enrollment again
4. Check for updates

👉 That’s it — in most cases, this fully resolves the issue.

Related Articles

• Windows 10 ESU: Why the “Enroll now” Link Isn’t Showing

• How to Fix Windows Update Error 0x800f0922

タグ: Windows10, ESU, troubleshooting, Security, KB5071959, Out-of-Band, Update