Laptop unable to open VirtualBox
4.5
VirtualBox won't launch or shows a "Critical Error" on startup.
Symptoms
- "Critical Error"
- App crash
- No response
Possible Causes
- Driver conflict
- Hyper-V issue
- Corrupt installation
Step-by-Step Fix
1
Reinstall VirtualBox
Uninstall, reboot, and install the latest version.
2
Disable Hyper-V
Can fix "Critical Error" on many Windows laptops.
3
Check for Third-Party Antivirus
Some security suites block VirtualBox's network driver.
When to See a Technician
If VirtualBox fails, try using VMware Player; it's often more compatible with modern Windows.
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