Shared Drives Gone After Windows Update – Fix

1. The Update Changed Your Network Profile

This is the number one reason. Windows updates sometimes flip your network from Private to Public. That kills file and printer sharing instantly.

Here's the fix:

1. Open Settings > Network & Internet > Wi-Fi (or Ethernet).
2. Click your active network.
3. Change it from Public to Private.

That usually brings back sharing without even touching your drive settings. I've seen this on Windows 10 21H2 and Windows 11 22H2. Don't bother checking advanced sharing settings first — this is the culprit 80% of the time.

If it's still broken, restart the Function Discovery Resource Publication and SSDP Discovery services. Run this as admin:

net start FDResPub
net start SSDPSRV

2. Update Overwrote Your Firewall Rules

The update might have reset your Windows Defender Firewall rules for File and Printer Sharing. Typical Windows nonsense.

Fix it:

1. Open Control Panel > Windows Defender Firewall > Allow an app or feature through Windows Defender Firewall.
2. Click Change settings.
3. Make sure File and Printer Sharing is checked for both Private and Public.

If it's already enabled but drives still don't show up, try this:

netsh advfirewall firewall set rule group="File and Printer Sharing" new enable=Yes

Run that in an admin command prompt. I've had to do this after the KB5028166 update on Windows 10. It's a known problem.

Another thing: check if the update enabled Network Discovery. Go to Control Panel > Network and Sharing Center > Advanced sharing settings. Turn on network discovery and file sharing for your profile.

3. Permissions Got Reset – Reapply Your Shares

Sometimes the update doesn't break the share, it just resets the NTFS permissions or the share permissions on the drive itself. Happens with external USB drives a lot.

Fix:

1. Right-click the drive in File Explorer > Properties > Sharing.
2. Click Advanced Sharing.
3. Check Share this folder.
4. Click Permissions and add Everyone with Read/Write (if it's safe for your setup).

Then check the NTFS permissions too:

1. Go to Security tab.
2. Click Edit and add Everyone with full control if you're in a trusted environment.

Don't bother with the Share and NTFS permissions mismatch headache — just set both to Everyone. It's quick and works.

Pro tip: If you're sharing a whole drive (like D:), Windows sometimes blocks it after an update. Create a folder on the drive and share that folder instead. It's more reliable.

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