How to fix “Can’t open AsIO3.sys” error in Windows?

What causes How to fix “Can’t open AsIO3.sys” error in Windows?

Corrupted system files
Outdated Universal ASIO driver
Issues with the Asus Probe monitoring application
Missing AsIO3.sys file

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Hello. After I restart my Windows computer I receive the "Can’t open AsIO3.sys" error. What is it and how do I fix it?

Windows is a complicated operating system that relies on thousands of processes running in the background to keep it working well. If even one of these files gets corrupted or missing, users can start experiencing bugs, freezes, and errors. Recently, some people encountered the "Can’t open AsIO3.sys" error in Windows.

AsIO3.sys belongs to the Asus Probe application. It is a system file[ref en-1] that consists of the driver and configuration of the device. These files are responsible for containing files of core functions of the operating system. Therefore, if they are corrupted they can cause serious damage.

It is unknown why exactly the error appears. However, there are a couple of options for people who want to fix it. Firstly, the error may be fixed by running a system file repair command. Secondly, the error can start appearing because of an outdated Universal ASIO driver.

The problem may also be caused by the Asus Probe monitoring application, so uninstalling it may get rid of the error. Finally, Windows has a built-in system restore tool that can revert the system to a previous point before any issues started. Running it should get rid of any problems.

In this guide, you will find 5 steps that should help you get rid of the "Can’t open AsIO3.sys" error in Windows. Manual troubleshooting can be a lengthy process. You can use a maintenance tool like [d1]. It can fix most system errors, BSODs,[ref en-2] corrupted files, and registry[ref en-3] issues automatically. Otherwise, follow the step-by-step instructions below.

How to fix cant open asio3 sys error in windows

Method 1. Fix Corrupted System Files

Use Command Prompt commands to repair system file corruption:

Open Command Prompt as administrator
Use the following command and press Enter:
sfc /scannow

Reboot your system
If SFC returned an error, then use the following command lines, pressing Enter after each:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth

Method 2. Update Universal ASIO Driver

Open Device Manager by searching it out from the Start Menu
Look for Universal ASIO driver
Right-click on it and select Update device

Then click Search automatically for drivers
Restart your device and see if the issue is solved

Method 3. Reinstall Universal ASIO Driver

Open Device Manager
Look for Universal ASIO driver
Right-click on it and select Uninstall device

Click Uninstall again to confirm
Restart your device and see if the driver is reinstalled
You can also use a dedicated utility like [rev id="DriverFix"] that can find the best drivers for your device and install them automatically

Method 4. Use System Restore

Type in Create a System Restore Point in Windows search and hit Enter
Click on System Restore

Select Choose a different restore point (if available) and click Next
Mark the Show more restore points checkbox
Choose the date before you started experiencing the issue
Click Next and reboot the system as required

Method 5. Uninstall Asus Probe

Open Settings
Go to Apps, then Apps & Features or Installed Apps
Look for Asus Probe

In Windows 11, click on the three vertical dots and select Advanced Options
In Windows 10, Select the app and select Uninstall

Bottom line

To fix the "Can’t open AsIO3.sys" error, you can repair corrupted system files using Command Prompt, update the Universal ASIO driver, or uninstall the Asus Probe application. If these methods do not resolve the issue, consider using a maintenance tool or the Windows system restore feature.

Frequently asked questions

What causes the 'Can’t open AsIO3.sys' error in Windows 10?

This error is typically caused by corrupted drivers or conflicts with security software. Ensuring that your system drivers are up to date can help resolve the issue.

How can I troubleshoot the 'Can’t open AsIO3.sys' error on Windows 11?

You can troubleshoot this error by reinstalling the software associated with AsIO3.sys or running a system file check to repair corrupted files. Additionally, temporarily disabling your antivirus may help to identify if it's causing the conflict.

Is there a way to permanently fix the 'Can’t open AsIO3.sys' error in Windows?

To permanently fix this issue, consider updating or reinstalling the relevant drivers and checking for Windows updates that may resolve compatibility issues. If the problem persists, you may need to uninstall the application that uses AsIO3.sys.

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Written & verified by

Ugnius Kiguolis

Co-founder & Windows Security Expert

Windows error analysis Malware removal Driver troubleshooting Registry repair Ransomware recovery

Ugnius Kiguolis is co-founder of uGetFix and a Windows security expert with over 10 years diagnosing system errors, malware infections, and ransomware attacks. He leads the editorial team and personally tests every fix before it goes to print.

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