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Hi Puneet,

Sometimes Windows updates failed to install because of corrupted system files. It may fail to install at first instance but then succeeds after a couple of attempts. To resolve your concern, kindly refer to this article Fix Windows Update errors.

Let us know if you need further assistance.

DOWNLOAD UPDATE CORRECTION

Before you do anything create a restore point just in case. 

1. Go to Microsoft update catalog and download the KB4073290 update that is for you under the link below: 

http://www.catalog.update.microsoft.com/Search.aspx?q=KB4073290 

2. Save the file into a local temp folder any folder. Do not use special characters for the temp folder. A simple name like "Win Temp" should be fine. 
3. Download the KB4073290 update and move the file to your new folder in step 2 above. I put this on a USB drive. 
4. Go to Control Panel > Programs and Features 
5. Left top corner click on View Installed Updates 
6. Scroll to the bottom and look for Microsoft Windows 
7. Look for KB4058043 if it is there, uninstall it 
8. Reboot your machine 
9. *NOTE* after the reboot DO NOT go check for updates again, as the machine will realize KB4058043 is not there and put it right back. 
10. Go to your folder in step 2 above and click on the KB4073290 update and install. Your machine will re-boot 
11. After the reboot check for updates. Your error should be gone. 
12. Delete the folder in step 2 above.

Select Troubleshoot in the left hand pane and then Windows update. Run the troubleshooter and see if it fixes anything, restart and try windows update again.

Had this issue today as well, this helped me, nothing else on the Internet worked.

Your device is at risk because it's out of date and missing important security