What is PRX-DET-STLL?
Proxy detection failure ranks as a medium-severity network adapter issue in our database. The computer is stuck detecting proxy settings and is blocking web traffic. This usually traces back to ISP Provider Error, corrupt network card driver and IP address conflict. Work through the steps below in order.
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)
We'd suggest Restart the router (turn off for 1 minute) first — it's the fix most often responsible for solving PRX-DET-STLL outright.
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2
Reset complete network settings in Windows
Repeat occurrences typically trace back to less obvious network instability factors, addressed in the steps ahead.
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3
Change the DNS servers to 8.8.8.8
For lingering PRX-DET-STLL cases, "Change the DNS servers to 8.8.8.8" is worth running through.
Commands & Diagnostics
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset
Frequently Asked Questions
In most cases, ISP Provider Error is behind PRX-DET-STLL. 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 PRX-DET-STLL cases on its own. Only work through the rest of the guide above if it comes back.
PRX-DET-STLL is a medium-severity issue. It can affect system stability, but the fix steps above typically resolve it without lasting damage.
In most cases, yes — the guide above resolves PRX-DET-STLL without a clean install. Treat a reinstall as the last resort, not the first move.
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