# Desktop firewall and network constraints

Corporate or strict desktop firewalls can block WebRTC ports/protocols needed for live audio-video sessions.

- Canonical URL: https://personapp.io/help/technical-support/desktop-firewall-network
- Category: Technical Support
- Platforms: web, ios, android
- Published: 2026-02-16
- Last reviewed: 2026-02-22
- Publisher: PersonApp Help Center (https://personapp.io/help)

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If chat fails only on office or managed networks, firewall/proxy rules are likely blocking real-time transport. Testing on an unrestricted network quickly confirms whether policy restrictions are the root cause.

## Steps

1. Try PersonApp from a different network (home hotspot) as a control test.
2. If it works elsewhere, ask network admin to allow WebRTC traffic patterns.
3. Disable local firewall filtering temporarily for browser test if allowed.
4. Use a standard browser profile without enterprise policy restrictions where possible.

## Frequently Asked Questions

### Can antivirus suites block calls?

Yes. Some suites include web shields that interfere with real-time media transport.

### What symptom indicates firewall blocks?

Persistent connection attempts with repeated drop/fail on only one network is a strong indicator.

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*Markdown version of https://personapp.io/help/technical-support/desktop-firewall-network, provided for AI assistants and plain-text readers. Full index: https://personapp.io/llms.txt*