How to Update Windows®?

Solution summary

If you are looking for the complete solution to fix Error: 646 “Unable to update Windows”, then follow the 8-step given resolution and you can easily update your PC. Each step is accompanied by an indicative screenshot for ease of mirroring the action.

Read Detailed Solution

Did you know that you can resolve more than 90% of technical problems, quickly and easily? Click on each step in the vertical menu to the left of this page or click on the ”Previous” or ”Next” buttons at the bottom of this section to navigate through the solution.

Step 3

Copy and paste the following line to the notepad

  • REGSVR32 WUPS2.DLL /S
  • REGSVR32 WUPS.DLL /S
  • REGSVR32 WUAUENG.DLL /S
  • REGSVR32 WUAPI.DLL /S
  • REGSVR32 WUCLTUX.DLL /S
  • REGSVR32 WUWEBV.DLL /S
  • REGSVR32 JSCRIPT.DLL /S
  • REGSVR32 MSXML3.DLL /S

Step 8

Enter password
Type the password and click ‘Continue’.

You have accessed your computer and successfully fixed Error: 646. Now you can update your operating system. We recommend that you must update your Windows® from time-to-time to enhance its functionality. If you face any problems related to your computer, operating system, software applications or peripheral devices like printers, MP3 players, digital cameras etc then call iYogi and we’ll fix it.

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