Logon Failure: Access Denied - Causes and Solutions

Common Causes of "Logon Failure: Access Denied" Error

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Question

The IT department is deploying new computers.

To ease the transition, users will be allowed to access their old and new systems.

The help desk is receiving reports that users are experiencing the following error when attempting to log in to their previous system: Logon Failure: Access Denied - Which of the following can cause this issue?

Answers

Explanations

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A. B. C. D.

C.

The error message "Logon Failure: Access Denied" typically occurs when a user tries to log in to a system but does not have the necessary permissions or credentials to do so. This error message could be caused by various factors, including:

A. Permission issues: This is the most common cause of the error message. It occurs when the user account does not have the required permissions to access the resources on the system. For example, if the user account is not a member of the appropriate group or if the user does not have the necessary privileges to access specific files or folders, the logon attempt may fail with the "Logon Failure: Access Denied" error message.

B. Access violations: Access violations occur when the system attempts to access a resource that it does not have the necessary permissions to access. This can occur when the user account is not granted permission to access a specific file or folder, or if the file or folder is encrypted or protected by some other means that the user account does not have access to.

C. Certificate issues: Certificate issues can also cause the "Logon Failure: Access Denied" error message. For example, if the user account has an invalid or expired certificate, the system may not allow the user to log in. This is because the system uses certificates to authenticate users and grant them access to resources.

D. Misconfigured devices: Misconfigured devices, such as firewalls or routers, can also cause the "Logon Failure: Access Denied" error message. For example, if the firewall is configured to block access to certain resources or if the router is misconfigured and does not allow the user to connect to the network, the logon attempt may fail with the "Logon Failure: Access Denied" error message.

In summary, the "Logon Failure: Access Denied" error message can be caused by a variety of factors, including permission issues, access violations, certificate issues, and misconfigured devices. To troubleshoot the issue, IT personnel should investigate the logs and settings of the affected systems to determine the root cause of the problem.