Chrome starts Windows Installer, but why? There are a lot of users who are trying to find a solution of this problem. The main reason of this issue is Cumulative update for Windows 10 1803 for x64-based Systems (KB4284385). Most of users with this problems have reported that Windows Installer window started to appear right after the Update. The biggest problem of this error is that a user can’t gain access to Google Chrome, because after few seconds of browsing Windows Installer window will pop-up, and there is nothing to do about it, the only way to close this window is to close whole Google Chrome.