Verizon Fios Error Code 1303: How to Fix It

Easy 15-45 minutes Medium Severity Verified June 2026
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Error Code
Error 1303
Brand
Verizon Fios
Product Type
networking
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
15-45 minutes
Verizon Fios Error Code 1303 appears when your set-top box fails to authenticate with Verizon's network, typically requiring device reactivation. This error usually occurs after power outages, system updates, or when the box loses connection to Verizon's servers.
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Tools You'll Need

How to Fix Error Code Error 1303

  1. Power cycle your set-top box

    Do not unplug the coax cable during this process as it may cause additional connection issues

  2. Check all cable connections

  3. Verify account status

  4. Force a signal refresh

  5. Perform factory reset if needed

    Factory reset will delete all recorded programs and personalized settings permanently

  6. Contact Verizon for reauthorization

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When to Call a Professional

Contact Verizon technical support if the error persists after factory reset, if you're experiencing widespread service outages in your area, or if the set-top box shows hardware failure symptoms like no power or display issues.

Frequently Asked Questions

What causes Verizon Fios Error Code 1303?
Error 1303 is caused by authentication failure between your set-top box and Verizon's servers. Common triggers include power outages, network interruptions, expired authorization tokens, or account status changes.
Will I lose my recordings if I factory reset the set-top box?
Yes, a factory reset will permanently delete all recorded programs and personalized settings. Try other troubleshooting steps first, and consider this as a last resort.
How long does it take for Verizon to reauthorize my box?
Remote reauthorization typically takes 5-15 minutes once initiated by Verizon support. The set-top box may restart multiple times during this process as it receives new activation signals.
Can I fix Error 1303 without calling Verizon?
Often yes - power cycling, checking connections, and forcing a signal refresh resolves most authentication issues. However, some cases require Verizon to manually reauthorize your device.
Does Error 1303 affect my internet service?
No, Error 1303 only affects TV service through your set-top box. Your Fios internet and phone services should continue working normally during this error.

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