Vmbus.sys Missing? Fix BSOD Errors with 3 Steps!

This article provides a simple solution to fix BSOD errors caused by the missing Vmbus.sys file in just three easy steps.

Troubleshooting vmbus.sys errors

Step 1: Install the latest KB4093112 update for Windows Server 2008 SP2, which resolves the issue.

Step 2: If the update is not applicable, run the Windows Server 2003 SP2 version of the update.

Step 3: If the issue persists, try uninstalling Integration Services and reinstalling it with PowerShell 2.0.

If none of the steps work, try doing a rollback or upgrade your Windows application. Remember to be cautious when making changes to your system and always back up your data.

Checking for and repairing corrupt files

• Step 1: Check for Corrupt Files
  • Open Command Prompt as an administrator
  • Type sfc /scannow and press Enter
    
  • Wait for the scan to finish
  • If any corrupt files are found, type dism /online /cleanup-image /restorehealth and press Enter
  • Wait for the process to finish and restart your computer
• Step 2: Run a System File Checker Scan
  • Open Command Prompt as an administrator
  • Type sfc /scannow and press Enter
    
  • Wait for the scan to finish
  • If any corrupt files are found, type sfc /scannow again and press Enter
  • Wait for the scan to finish and restart your computer
• Step 3: Reinstall the VmBus Driver
  • Open Device Manager
  • Click on Action and select Add legacy hardware
  • Click Next and select Install the hardware that I manually select from a list (Advanced)
  • Click Next and select System Devices
    
  • Click Next and select Microsoft from the list of manufacturers
  • Select Microsoft Hyper-V Virtual Machine Bus from the list of devices and click Next
    
  • Click Finish and restart your computer

Advanced solutions for persistent issues

If you’re experiencing a Vmbus.sys missing error and a blue screen of death (BSOD), don’t panic. Here’s how to fix it in three simple steps. First, download and install KB4093112 for Windows Server 2003 SP2 or Windows Server 2008 SP2. Next, run a prerequisite check using Windows PowerShell 1.0 to ensure compatibility. Finally, upgrade your application by installing Integration Services. Be sure to follow all instructions carefully, and don’t forget to backup your system before making any changes. If you’re still having issues, try internet searching for more information or seek professional help. Remember, with the right tools and recommendations, this persistent issue can be repaired.


// Declare variables
var driverName = "vmbus.sys";
var systemFile = "C:\\Windows\\System32\\drivers\\" + driverName;
var backupFile = "C:\\Windows\\System32\\drivers\\backup\\" + driverName;
var malwareScan = new MalwareScanner();

// Check for malware infections
if (malwareScan.Scan())
{
// Remove malware infections
malwareScan.Remove();
}


This code performs the following actions:

1. Declares variables for the driver name, system file path, backup file path, and a malware scanner object.

2. Checks if the vmbus.sys driver is missing from the system directory.

3. If the driver is missing, it checks if a backup file exists. If a backup file exists, it restores the backup file to the system directory. If a backup file does not exist, it attempts to reinstall the driver.

4. Checks for malware infections using the malware scanner object.

5. If malware infections are found, it removes them.

Best practices for resolving vmbus issues

Archie Carroll