Error 797 | Modem not found

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Systems & Devices

Canonical

/systems/routers/error-codes/error-797/

Last Updated

Feb 27, 2026

Summary

The connection could not be made because the modem or network device was not found or not ready.

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Router & Wi-Fi Error Codes: ISP Modems, DNS Failures, Authentication, and Drops

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What This Code Means

Error 797 is a connection error indicating that the system could not find or use the required modem/network device for a dial/PPPoE-style connection. It can be caused by missing drivers, disabled adapters, or incorrect connection configuration.

Where Users Usually See This Code

Broadband/PPPoE connections configured on a PC
After network adapter changes or driver updates

Why This Code Appears

Network adapter is disabled or driver is missing
Connection profile points to the wrong device
Device is unavailable due to system changes

What Typically Happens Next

The connection fails immediately

What This Code Is Not

It is not a password/authentication decline
It is not a DNS error

Troubleshooting Checklist

□ Verify the network adapter is present and enabled
□ Update/reinstall the adapter drivers if needed
□ Recreate the connection profile and select the correct interface

Notes And Edge Cases

On modern routers, PPPoE is usually configured on the router, not on each workstation.

Related Codes

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