What is IGMP-SNP-FAIL?
This medium-severity issue affects the network adapter. A local switch or router does not properly filter multicast traffic, IPTV is interrupted. Typical causes include ISP Provider Error, corrupt network card driver and IP address conflict. Use the steps below to track down and fix the cause.
Common Causes
- ISP Provider Error
- Corrupt network card driver
- Stuck Router
- IP address conflict
Step-by-Step Fix Guide
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1
Restart the router (turn off for 1 minute)
Restart the router (turn off for 1 minute) tends to be the quickest win here, addressing the most typical cause of IGMP-SNP-FAIL.
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2
Reset complete network settings in Windows
For cases that don't clear up right away, the remaining steps target less typical network instability problems.
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3
Change the DNS servers to 8.8.8.8
Still seeing IGMP-SNP-FAIL after that? "Change the DNS servers to 8.8.8.8" is the next thing to check.
Commands & Diagnostics
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset
Frequently Asked Questions
In most cases, ISP Provider Error is behind IGMP-SNP-FAIL. Corrupt network card driver, stuck Router and IP address conflict can trigger it too.
Try "Restart the router (turn off for 1 minute)" first — it resolves most IGMP-SNP-FAIL cases on its own. Only work through the rest of the guide above if it comes back.
As a medium-severity issue, IGMP-SNP-FAIL is more of a stability annoyance than a hardware risk — the steps above should clear it up.
In most cases, yes — the guide above resolves IGMP-SNP-FAIL without a clean install. Treat a reinstall as the last resort, not the first move.
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