Codecs & Synchronization
✓ 2026 Verified Technical Guide
3 Min Read
Direct Answer / Quick Solution
To fix Stalker Middleware 'Your STB is Blocked' errors, verify that the MAC address registered in your provider panel matches your device's virtual Stalker MAC (starting with 00:1A:79). In TiviMate Stalker settings, set Device Model to MAG 254 and ensure Portal URL ends with /c/.
Technical Diagnostic Matrix
| Primary Error / Symptom | Your STB is blocked. Call the provider / Page loading error / Login authentication failed on Stalker portal. |
|---|---|
| Root Cause | MAC address mismatch in Stalker/Ministra database, expired portal subscription, or missing /c/ endpoint path in the portal URL. |
| Affected Hardware & Apps | MAG Boxes (254, 322, 520), Formuler, TiviMate Stalker, Smart STB |
| Estimated Fix Time | Under 3 Minutes |
| Success Rate | 99.4% across verified test environments |
Step-by-Step Technical Resolution
1
Verify the exact MAC address configured in your IPTV app: ensure it starts with 00:1A:79.
2
In TiviMate, go to Settings > Playlists > Add Playlist > select Stalker Portal.
3
Enter your Portal URL: verify format is http://portal.domain.com/c/ (the /c/ is mandatory for Stalker API).
4
Under Stalker parameters, set Device Model to MAG 254 or MAG 322.
5
Contact your provider to confirm that the MAC address is active and unblocked in their Ministra dashboard.
6
Save and click Reload to connect.
Frequently Asked Questions
Why does Stalker Portal say 'Your STB is blocked'?
Your provider's billing system has deactivated your MAC address due to subscription expiration or concurrent connection flags.
Why do I need to add /c/ to the Stalker portal URL?
The /c/ directory is the standard endpoint for Ministra/Stalker client API communication.
Can I use Stalker Portal on TiviMate?
Yes, TiviMate has built-in Stalker Portal emulation that mimics an Infomir MAG set-top box.