0x80072EFD | Cannot connect

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Systems & Devices

Canonical

/systems/operating-systems/error-codes/0x80072efd/

Last Updated

Feb 27, 2026

Summary

Windows could not establish a connection to the required service endpoint.

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What This Code Means

0x80072EFD indicates a connection failure when Windows attempts to reach an online service (commonly update or store services). It can occur when networking is blocked, misconfigured, or when required endpoints are unreachable.

Where Users Usually See This Code

Windows Update operations
Microsoft Store app installs/updates
Activation or sign-in that needs service communication
Update and networking logs

Why This Code Appears

Proxy/firewall restrictions
DNS issues or captive portals
Incorrect time/time zone impacting TLS connections
Service outage or connectivity interruption

What Typically Happens Next

Requests fail until connectivity is restored
Retries may succeed if the issue was transient

What This Code Is Not

It is not an installer corruption code by itself
It does not indicate which endpoint was blocked without logs

Troubleshooting Checklist

□ Verify internet access and rule out captive portals
□ Confirm system date/time are correct
□ Check proxy settings and disable unnecessary proxies for testing
□ Test on a different network to isolate local restrictions
□ Use official Microsoft troubleshooting guidance if the issue persists

Notes And Edge Cases

Corporate networks may require specific proxy or TLS inspection settings; coordinate with IT where applicable.

Related Codes

8 links

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