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ErrorLib — Industrial Fault Code Library

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F00B

Privilege error; access denied

Allen-Bradley · Logix 5000

What does F00B mean?

Access to the requested function or resource was denied due to insufficient privileges. This is a security or access control related error.

Common Causes

  • Privilege error; access denied

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the currently logged-in user's privileges and assigned security roles within FactoryTalk Security or Studio 5000 for the specific Logix 5000 controller.

  2. 2

    Check the Logix 5000 controller's security policy settings and user access configuration in Studio 5000 for restricted functions.

  3. 3

    Inspect the FactoryTalk Security logs or controller audit trails for detailed information regarding the access denial event.

  4. 4

    Confirm network connectivity and authentication server (e.g., Active Directory, FactoryTalk Directory) status if security is managed externally.

  5. 5

    Review the specific function or resource attempted to be accessed, and identify the required privilege level for that operation.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

00D0No block-transfer response (timeout)00D1Checksum mismatch in read response00D2Read/Write request/response mismatch
Source: Logix 5000
Open Manual (Page 165)Search more codes in this manual