Internet Slow After Windows 11 Update – Easy Fix (2026 Guide)

If your internet became slow after a Windows 11 update, you are not alone.
Many users experience slow browsing, buffering, or delayed downloads immediately after installing updates.

This problem is especially common after cumulative or driver-related Windows 11 updates.

Problem: Internet speed is very slow after a Windows 11 update.

Good news: This is a common Windows 11 issue and can be fixed using simple network adjustments.

For a complete solution to all Windows 11 internet issues, read this Windows 11 Internet Problems – Complete Fix Guide .

Why Does Internet Become Slow After a Windows 11 Update?

Windows updates can reset network settings, change DNS configuration,
or cause driver compatibility issues that slow down your internet connection.

Network drivers updated incorrectly
DNS settings changed automatically
Background update services using bandwidth
Corrupted network cache

Fix 1: Restart Your PC and Router

After any major Windows update, a full restart helps clear temporary conflicts.

Restart your Windows 11 PC
Turn off your router for 2–3 minutes
Turn it back on and reconnect

Fix 2: Change DNS Server (Recommended)

If the internet is still slow after changing DNS, this detailed guide can help you fix deeper DNS issues on Windows 11: DNS Server Not Responding on Windows 11 .

DNS issues are one of the most common causes of slow internet after updates.

Open Settings → Network & Internet
Select WiFi or Ethernet
Click Edit next to DNS server assignment
Select Manual and enable IPv4

Preferred DNS: 8.8.8.8
Alternate DNS: 8.8.4.4

Save changes and restart your system.

Fix 3: Flush Network Cache

Clearing old network cache can instantly improve speed.

ipconfig /flushdns
ipconfig /release
ipconfig /renew

Fix 4: Disable Background Update Services

Windows may continue downloading updates in the background.

Open Settings → Windows Update
Pause updates temporarily
Restart your PC

Fix 5: Update or Roll Back Network Driver

Sometimes new drivers cause compatibility issues.

Right-click Start → Device Manager
Expand Network adapters
Right-click your adapter
Select Update driver or Roll back driver

Note: If the internet does not work on any device connected to the same network, the issue may be related to your internet service provider or router hardware.

Related Windows 11 Internet Fixes

Conclusion

If your internet is slow after a Windows 11 update, the issue is usually related
to DNS changes, driver conflicts, or background update services.

Applying the fixes above should restore your normal internet speed quickly.

Last Updated: 2026

Windows 11 Internet Slow After Update – How to Fix (2026 Guide)