Fix “Can’t Open AsIO sys 2” Error: Get Your Audio Working Again

While installing or opening the ASUS utility or startup of Asus AI Suite and AURA the error comes with a popup notification saying Can’t open AsIO.sys !! ( 2 ). 

This is a very common issue faced by a lot of Asus users. If you’re one of them and already get annoyed with this mess, then don’t worry. 

In this article, we’re going to suggest to you all the relevant information about how to solve this error. So, stick with the article till the end.

Why You’re Seeing the “Can’t Open AsIO.sys (2)” Error?

AsIO.sys is basically an Asus driver file that comes with the Asus motherboard preinstalled.

When the AsIO.dll file gets missing or corrupted or defective, the system can’t open or execute the AsIO.sys file, and then this error occurs. 

To solve this error, you’ve to apply some effective methods. Jump to the next section to check them all.

ASIO.sys Error (2): How to Resolve this Audio Driver Issue?

Here’re the possible solutions to this error. Check and apply them one by one until they get fixed.

Method 1: Unblock the Asus AI Suite

When you try to install the AI Suite and fail because of this error, then this method will get rid of it.

Step 1: Right-click on the downloaded AI Suite ZIP file.

Step 2: Select Properties.

Step 3: Mark the Unblock box at the bottom and click OK.

Step 4: Now, open the ZIP file and extract the folder.

Step 5: Inside the folder, right-click on the AsusSetup.exe file and choose to Run as administrator.

In this way, you can successfully install the software.

Method 2: Replace AsIO.dll and AsIO.sys File

Another best solution to this error is replacing the AsIO.dll files and the AsIO.sys file according to the following ways –

Step 1: Download the latest AI Suite package according to your motherboard from Asus’ official site.

Step 2: Open the ZIP file and extract the contained folder.

Step 3: After extracting, find the DrvResource folder inside this folder.

Step 4: Locate the folder named Io. It contains the AsIO.dll file.

Step 5: Now, navigate to the AI Suite Installation folder.

Step 6: Go to the search bar at the top-right corner and search for AsIO.dll.

Step 7: Then, replace all the AsIO.dll files with the one from DrvResource/Io.

Step 8: Ensure to replace all the AsIO.dll in the AI Suite installation folder.

Step 9: Now, navigate to local drive (C:) > Windows > SysWOW64 > drivers.

Step 10: Replace the AsIO.sys file with the one from DrvResource/Io according to your Windows version. Such as for 64-bit you should use AsIO64.sys file to replace. To do so –

• Delete the AsIO.sys file in drivers. 
• Now copy the AsIO64.sys file from DrvResource/Io and paste it in drivers. 
• Rename it as AsIO.sys. 

Step 11: Close the windows and check if the error appears.

Method 3: Reinstall AI Suite

When the previous methods fail to solve the problem for you, it’s time to go for a fresh install of the program. But before doing so, you must do some initial things. Here’s the whole method –

Step 1: Uninstall the Asus AI Suite.

Step 2: Search for regedit in the search bar and select Registry Editor.

Step 3: Here, locate all entries related to AsIO.sys and delete them.

Step 4: Now, reinstall the Asus AI Suite.

There’s another method to solve this issue, but it’s a little bit more complex than the others. It’s not recommended to apply it first. Any of the first 3 methods should do the job for you. But if anyhow they all fail, you can try the following one.

Method 4: Grant Permission for AsIO.sys (Optional)

Step 1: First, log in with the administrative account.

Step 2: Navigate to the local drive (C:) > Windows > SysWOW64.

Step 3: Right-click on the drivers folder and select Properties.

Step 4: Open the Security tab and go to Edit.

Step 5: Now, select Add.

Step 6: Type Everyone in the box at the bottom and click OK. 

Step 7: Return to the Security tab and select Advanced.

Step 8: Navigate Advanced Security Settings > Permissions. Select Change Permissions.

Step 9: Again, type Everyone in the box. Ensure the Replace owner on subcontainers and objects is marked.

Step 10: Open Auditing tab and select the owner as Add with Everyone. 

Step 11: Set Everyone as the priciple and then locate Basic Authorization. Mark the Full control box.

Step 12: Finish the process and restart the computer.

Frequently Asked Questions (FAQs)

Can I delete the AsIO.sys file?

AsIO.sys is an important driver file of Asus Utility software. Without it, the software won’t function perfectly. So, you can surely delete it from the installation folder, but you shouldn’t if the utility program is essential for you. But you may delete it when it seems to cause a threat to your computer system.

How to launch ASIO panel?

The procedure is quite simple. First of all, press F10 and click on the speaker icon to access Audio Settings. Or you can access the Audio Settings from the Options menu. Then at the bottom-left, you can see the Show ASIO panel option. Click it to open the panel.

How to activate ASIO4ALL?

To do so, you should start by opening the Start menu and locating ASIO4ALL offline settings. After that, click the next button to choose your interface. Then open playback/input settings. Finally, choose ASIO4ALL as the playback/input device.

What is the cause behind Can’t open AsIO3.sys error?

It occurs when somehow your computer hard drives get corrupted or have bad sectors and affect the utility installation folder. That means if the AsIO3.sys file is being defective by the hard drive corruption then this error shows up.

Conclusion

That’s all about the error. If you’re able to apply these methods successfully, then you may overcome this problem with ease. If you think you get any help from this post then don’t forget to share your valuable feedback with us.