0x8008201c
Moderate
NVIDIA · PC Software
GeForce NOW launch blocked by local firewall or antivirus inspection.
Quick Answer
Error code 0x8008201C on your NVIDIA PC Software means: GeForce NOW launch blocked by local firewall or antivirus inspection.. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Allow GeForce NOW app and browser traffic in firewall rules.
2
Temporarily disable antivirus web/network shield and retest.
3
Bypass restrictive proxy if possible.
4
Verify outbound HTTPS traffic is permitted.
5
Re-enable security controls with explicit allowlist rules.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
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