Cross Download

To fix this problem, there six steps to follow. You can open tutorial video and follow instruction, step bystep, how to fix this issue.

Cause
Operating system infect by Malware

About Error code 0x80073b01
When OS infect by malware, the computers performance will slow down. This is due, malware to run automatically when the computer starts. Before the repair is done, do the cleaning:
Windows startup, schedule system, system

STEP 1
Clean Startup Windows, Schedule Task and System Service

STEP 2
Download and Install Malwarebytes Anti-Malware (free software)

STEP 3
Repair corrupt file system

STEP 4
Clean file system, internet history, cookies, etc, Clean Registry

STEP 5
Restore Startup Windows, Schedule Task and System Service. Select if you think is important

STEP 6
Open Microsoft Security Client to make sure Windows Defender can be open.