Error Extraneous Information 677 (0x2A5): How to Fix it

Resetting the security permissions can help with this issue

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ERROR_EXTRANEOUS_INFORMATION appears if the ACL contains more information than the system or the application expects. This issue affects system administrators, but it can be easily fixed by following our solutions.

How can I fix ERROR_EXTRANEOUS_INFORMATION?

1. Review the ACL

  1. Press the Windows key + R and type cmd. Press Ctrl + Shift + Enter to run it as administrator.
    command prompt
  2. Next, run the following command: icacls <path-to-object>
  3. Look for an unusually large number of entries.
  4. Locate any redundant or invalid permissions.
  5. Ensure that there are no unsupported or outdated SID entries.

2. Simplify the ACL

  1. Right-click the file or folder that is giving you trouble. Next, choose Properties.
    properties context menu
  2. Navigate to Security and click on Edit to modify the permissions.
    jagex launcher edit security
  3. Remove unnecessary permissions.
  4. Save changes.

If you’re an advanced user, you can do the following:

  1. Open Command Prompt as administrator.
  2. Next, run the following command: icacls <path-to-object> /reset
    icalcs reset
  3. This will reset the permissions to the default.

3. Use minimal ACL

  1. Open Command Prompt as administrator again.
  2. Run the following command: icacls <path-to-object> /grant <username>:F
    icalcs grant
  3. Check if the issue is still there.
  4. If not, reintroduce the previous permissions.

4. Repair permissions

  1. Open the command line with administrative privileges.
  2. Next, run the following:
    takeown /f <path-to-object>
    icacls <path-to-object> /reset /t
  3. This will repair the permissions and hopefully fix the problem.

5. Validate Group Policy settings

  1. Open Command Prompt as administrator.
  2. Run the following command: gpresult /h report.html
    gpresult command
  3. Next, open the report.html file, it should be located in the same directory where you ran the previous command.
  4. Look for conflicting or redundant policies affecting the ACL.
  5. Adjust the Group Policy settings if needed.

6. Enable auditing for detailed logs

  1. Press Windows key + R and enter secpol.msc.
    secpol msc run window
  2. Next, go to Local Policies and choose Audit Policy.
    audit policy
  3. Next, enable auditing for Object Access.
  4. Save changes.
  5. Next, press the Windows key + X and choose Event Viewer.
    event viewer id 5136
  6. Locate the Security Logs and you’ll be able to find related events that might help you pinpoint the cause of the problem.

ERROR_EXTRANEOUS_INFORMATION can be recognized by the following message: 677 (0x2A5) {Too Much Information} The specified access control list (ACL) contained more information than was expected.

If you encounter it, try modifying your access permissions accordingly or reset them to the default.

This isn’t the only permission issue, and we wrote about ERROR_IO_PRIVILEGE_FAILED and ERROR_DUPLICATE_PRIVILEGES in our previous guides, so don’t miss them.

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