Security AlertMedium
Microsoft fixes Always On VPN failures after September update
Oct 30, 2026 · Summarized by Fundy Tech from BleepingComputer
The 30-second version
Microsoft says it has fixed Always On VPN failures caused by September 2026 Windows 11 security updates. IT admins can also use a temporary workaround.
Key points
- The issue affected Always On VPN connections after September 2026 updates.
- Microsoft says the fix is in KB5127936 preview update.
- Admins can set VPN profiles to SSTP only or IKEv2 only.
- Microsoft had wrongly marked the issue fixed in October updates.
Why it matters
If your business uses Always On VPN, some staff may have had trouble reaching company systems. This can interrupt remote work and support access. Admins should test the fix or apply the temporary protocol change if they are waiting for Patch Tuesday.
Who’s affected: Windows 11 Always On VPN users
What to do
- Install the KB5127936 preview update if suitable.
- Or set Always On VPN to SSTP only or IKEv2 only.
- Test remote access for staff.
- Review Microsoft update notes.
Original reporting
Not sure if this affects you?
Fundy Tech helps businesses and households across Atlantic Canada stay patched, protected and up to speed. Tell us what you’re running and we’ll tell you straight whether you need to act.