If you are facing Avast error code 0x8009000bu, don't worry we have simple steps to fix the issue easily. This error occurs during the boot-time scan.
Method 1: Trying simple fixes
- Step 1: If you have any other security software installed on your computer, try disabling it for some time. If you have a firewall, turn that off too. You need to do this because other security programs might conflict with the Avast Antivirus.
- Step 2: If you are using a Windows computer, turn off the Real-Time protection feature on Windows Defender.
- Step 3: In case the above simple fixes fail to work, move on to the next method to fix the Avast error code 0x8009000bu.
