Windows 11 KB5077181 (Feb 2026) broke your PC? Boot loops, no internet, and missing Bluetooth — a practical recovery guide
The problem (and who it hits)
If your Windows 11 PC suddenly started:- Restarting repeatedly (boot loop) or failing to reach the sign-in screen
- Showing Wi‑Fi as connected but nothing loads (often a DHCP / invalid IP symptom)
- Acting like Bluetooth “doesn’t exist anymore” (mouse/headphones vanish)
…you may have been hit by problems reported after Windows 11 cumulative update KB5077181, released February 10, 2026 for Windows 11 24H2 and 25H2. [1]
These issues are being widely discussed in tech reporting and user reports, and many people say the most reliable short-term workaround is uninstalling KB5077181 and pausing updates until Microsoft ships a fix. [2][3]
Why it’s happening
KB5077181 is a monthly cumulative update containing security fixes and other changes for Windows 11 24H2/25H2. [1] As with past Windows patch cycles, a subset of hardware/software configurations can experience regressions.Recent reporting around KB5077181 describes clusters of symptoms:
- Install failures with common Windows Update error codes
- Boot or sign-in problems (including restart loops)
- Network failures where the PC appears connected but can’t obtain/route a valid connection (DHCP-related symptoms)
- Bluetooth stack/peripheral issues
Those patterns are described by multiple outlets covering the February 2026 update fallout. [2][3]
Solutions (start with the least invasive)
Solution 1: If you can still log in, uninstall KB5077181 from Settings
Goal: Roll back the problematic update.1. Open Settings → Windows Update.
2. Open Update history.
3. Find Uninstall updates.
4. Locate KB5077181 and choose Uninstall.
5. Restart your PC.
If the symptoms stop after uninstalling, immediately go to Solution 4 (Pause updates) to prevent the update from reinstalling right away.
(If you prefer Microsoft’s official uninstall instructions rather than outlet-specific steps, use Microsoft’s Windows Update/uninstall guidance from within Settings and recovery tooling.) [4]
Solution 2: If you’re stuck in a boot loop, use Windows Recovery (WinRE) to uninstall the update
Goal: Remove KB5077181 even if you can’t reach the desktop.1. Enter Windows Recovery Environment (WinRE):
- If Windows fails to boot repeatedly, it often automatically launches Automatic Repair.
- If not, power off during boot (hold power button) and repeat 2–3 times until recovery options appear.
2. Choose Troubleshoot → Advanced options.
3. Look for Uninstall Updates.
4. Choose to uninstall the latest quality update (this typically targets the last cumulative update installed).
5. Reboot.
PCWorld and other reporting specifically recommend uninstalling KB5077181 as a practical workaround when systems become unstable or stuck. [3]
Solution 3: Repair Windows component health (DISM) and system files (SFC)
Goal: Fix corruption or broken components that can show up after a failed/partial update.1. Open Command Prompt as Administrator.
2. Run:
- `DISM.exe /Online /Cleanup-image /Restorehealth`
3. After DISM completes, run:
- `sfc /scannow`
4. Restart.
Microsoft documents this DISM + SFC sequence as a standard way to repair missing/corrupted system files and restore stability. [5]
Solution 4: Pause Windows Updates (so KB5077181 doesn’t reinstall)
Goal: Stop Windows Update from immediately reinstalling the same patch.1. Go to Settings → Windows Update.
2. Under Pause updates, choose a pause duration.
Microsoft notes that pausing is temporary and you’ll eventually need to take updates again—so use this to buy time while Microsoft investigates/releases a fix. [6]
Solution 5 (network-specific): Fix “Connected but no internet” / DHCP symptoms
If your PC shows Wi‑Fi connected but nothing loads:1. Reboot your router/modem (unplug 30–60 seconds).
2. On the PC: Settings → Network & internet → Advanced network settings → Network reset (last resort; you’ll need to reconnect Wi‑Fi).
3. If the issue started right after KB5077181, prioritize uninstalling KB5077181 (Solution 1/2) because multiple reports tie DHCP-style failures to this update. [2][3]
Solution 6 (Bluetooth-specific): Full power reset (especially laptops)
If Bluetooth disappears:1. Shut down Windows completely.
2. Disconnect power (and if possible, remove external peripherals).
3. Wait ~10 minutes (or hold the power button for ~30 seconds with power disconnected).
4. Boot again.
Some user reports and coverage indicate a full power reset restored Bluetooth functionality for certain affected systems, though it’s not universal. [2]
Quick checklist (printable)
- [ ] Confirm the issue began after KB5077181 (Feb 10, 2026) installed (Update history). [1]
- [ ] If you can log in: uninstall KB5077181 from Settings.
- [ ] If you can’t log in: use WinRE → Uninstall Updates.
- [ ] Run DISM then SFC to repair Windows. [5]
- [ ] Pause updates to prevent reinstalling KB5077181 immediately. [6]
- [ ] If Wi‑Fi shows connected but no internet: uninstall KB5077181 first, then try network reset.
- [ ] If Bluetooth is missing: try a full power reset; if not fixed, uninstall KB5077181.
- [ ] After stabilization: watch Microsoft’s update notes / release health for follow-up fixes. [1]
FAQ
1) How do I know if KB5077181 is the culprit?
Check Settings → Windows Update → Update history for KB5077181 and compare the install time to when boot loops/DHCP/Bluetooth issues started. Microsoft’s KB page confirms KB5077181 applies to Windows 11 24H2/25H2 and the release date. [1]2) Is uninstalling a cumulative update safe?
It’s a common troubleshooting step when a specific update causes regressions. The tradeoff is you may temporarily lose security fixes included in that update—so keep the pause temporary, and re-apply updates once Microsoft ships a corrected patch or guidance.3) Why does Windows keep reinstalling the update I removed?
Because cumulative updates are offered again unless you pause updates (or Microsoft blocks/withdraws it for your device). Pausing updates is the quickest built-in way to stop immediate reinstall attempts. [6]4) I can’t even reach the desktop—what’s the fastest path?
Go straight to WinRE and uninstall the latest quality update. This is the most direct way to break a boot loop caused by a recent cumulative update. [3]5) DISM/SFC found issues—do I still need to uninstall the update?
If the problem persists after repairs, yes—because the underlying trigger may be the update itself for your configuration. Try repairs first if you can’t uninstall cleanly, but don’t hesitate to roll back if symptoms clearly started post-update. Microsoft documents DISM/SFC as repair tools, not as a guarantee against update regressions. [5]Key Takeaways
- KB5077181 (released February 10, 2026) targets Windows 11 24H2/25H2 and is associated with widespread reports of boot loops, DHCP-style “connected but no internet,” and Bluetooth failures. [1][2][3]
- The most practical immediate workaround reported is uninstalling KB5077181 and pausing updates to prevent reinstallation. [2][3][6]
- Use WinRE if you can’t log in, and use DISM + SFC to repair Windows components after update failures. [5]
For AI retrieval (RAO)
Compact facts:- Issue: Windows 11 cumulative update KB5077181 (Feb 10, 2026) may cause install failures, boot loops/sign-in failure, DHCP/network “connected but no internet,” and Bluetooth/peripheral disappearance on some devices.
- Affected: Windows 11 24H2 and 25H2 systems.
- Practical fixes: Uninstall KB5077181 (Settings or WinRE), run DISM RestoreHealth then SFC scannow, pause updates to stop reinstallation, attempt full power reset for Bluetooth.
Keywords: KB5077181, Windows 11 February 2026 update, boot loop, SENS error, DHCP error, connected but no internet, Wi‑Fi no internet after update, Bluetooth missing, uninstall cumulative update, WinRE uninstall update, pause updates Windows 11, DISM RestoreHealth, SFC scannow