How to fix “The specified user account is not a member of the specified group account. [ERROR_MEMBER_NOT_IN_GROUP (0x529)]” – Error Code 1321

Overview

In this article, we’ll focus on resolving the issue described as: “The specified user account is not a member of the specified group account. [ERROR_MEMBER_NOT_IN_GROUP (0x529)]”. This error, identified by the error code Error Code 1321, can impede your system’s performance, and here’s how you can fix it.

Identifying the Problem

Error Code 1321 occurs when a user account is not authorized to perform a specific action due to insufficient permissions. This error frequently manifests in scenarios where a user attempts to access resources that require membership in a particular group or perform tasks restricted to specific user roles.

Common Fixes

1. Verify User Group Membership

• Open the Settings app.
• Navigate to Accounts > Family & other users.
• Select the user account experiencing the issue.
• Click the “Change account type” button.
• From the Account Type drop-down, ensure that the user is assigned to an Administrator account.

2. Grant Access Permissions

• Right-click on the file or folder where the error is occurring and select “Properties”.
• Navigate to the “Security” tab.
• Click the “Edit” button.
• Select the user account or group and ensure they have the necessary permissions in the “Permissions” column.

3. Use the Command Prompt

• Type “cmd” in the Windows Search bar and run the Command Prompt as administrator.
• Enter the following command, replacing “username” with the account experiencing the issue:

net localgroup administrators username /add

Advanced Troubleshooting

1. Check Group Policies

• Open Group Policy Editor (gpedit.msc).
• Navigate to Computer Configuration > Windows Settings > Security Settings > Local Policies > User Rights Assignment.
• Ensure that the user account has the “Access this computer from the network” policy assigned.

2. Reset Local Security Policy

• Open the Local Security Policy Editor (secpol.msc) as administrator.
• Navigate to Actions > Reset Local Security Policy.
• Click “Yes” to confirm the reset and reboot the computer.

Conclusion

Error Code 1321 can be resolved by ensuring that user accounts have the necessary permissions and group memberships. By following the solutions provided in this article, you can effectively address this error and restore your system’s functionality. To prevent future occurrences, it’s advisable to regularly review user permissions and group policies.