Software⏱️ 4 min read📅 2026-06-11

How to Fix 0x1c620 Error – ntoskrnl.exe !SeAccessCheckWith Hint+0x1c620 drive still in use error

Windows error analysis and troubleshooting guide.

Quick Answer: Use Systeminternals suite to analyze ntoskrnl.exe logs, research results in detail, and consider disabling drive indexing.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. 🔧 Proven Troubleshooting Steps
  3. 🎯 Final Words

The 'ntoskrnl.exe !SeAccessCheckWithHint+0x1c620' error message is an indication that the Windows kernel is unable to properly access or eject a removable drive, such as a flash drive. This issue can affect anyone who frequently uses removable storage devices in their Windows 10 PC.

The problem of the drive being considered 'still in use' despite no applications being open can be frustrating and time-consuming to resolve. In this guide, we will walk you through the steps to identify the root cause of the issue and provide methods to fix it.

🔍 Why This Happens

  • The error is often caused by a misbehaving system process that prevents the kernel from properly accessing or ejecting the removable drive. This can be due to a number of factors, including driver issues, malware infections, or corrupted system files.
  • Another possible cause is related to indexing of drives by the system. When you plug in a removable drive, Windows may index it to speed up file access times, but this process can sometimes interfere with safe removal.

🔧 Proven Troubleshooting Steps

Using SystemInternals Suite to Identify and Fix the Problem

  1. Step 1: Download and install the SystemInternals suite from its official website. This will provide you with tools to analyze system processes, logs, and other system data.
  2. Step 2: Open the Process Monitor tool in the SystemInternals suite and set it to filter by 'ntoskrnl.exe' and '!SeAccessCheckWithHint+0x1c620'. Run the process for an extended period to gather more information about the issue.
  3. Step 3: Analyze the gathered logs and identify any patterns or anomalies that may indicate what is causing the problem. This could include network connections, file access patterns, or other system activity.
  4. Step 4: Once you have identified the root cause of the issue, you can attempt to fix it using various SystemInternals tools, such as 'handle' or 'process' manager, to isolate and terminate any problematic processes.

Disabling Drive Indexing

  1. Step 1: Press the Windows key + R to open the Run dialog box. Type 'services.msc' and press Enter to open the Services console.
  2. Step 2: In the Services console, find the 'Windows Search' service and right-click on it to select 'Properties'. In the Properties window, set the startup type to 'Disabled'. Click 'Stop' and then click 'OK' to save the changes.
  3. Step 3: Repeat the above steps for any other services that may be indexing removable drives. You can also use the 'Group Policy Editor' to disable drive indexing for all users on your system.
  4. Step 4: After disabling drive indexing, try safely ejecting the removable drive again to see if the issue persists.

🎯 Final Words

By following these steps and identifying the root cause of the problem, you should be able to resolve the 'ntoskrnl.exe !SeAccessCheckWithHint+0x1c620' error message. Remember to always practice safe removal of removable drives and keep your system updated with the latest security patches.

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