I own a windows 10 pc which is dual booted with Ubuntu 16.x version. Recently an executable file has been dropped in my desktop by microsoft(I didn't download, or did something) with the name windows10 update agent. After verifying that it is actually from Microsoft I executed the file. It said new and important windows upgrade is available so I have upgraded. It displayed the upgrade successful message
Everything was fine until I restart my PC for logging into Ubuntu but it has straight away gone to Windows 10 user account login page.
What to do in this case? Any help would be appreciated!