Here is what you can do to fix the issue.
Please click on start menu and then search for “windows Features”.
Scroll down and uncheck the option for “Windows Search”
Click ok to apply settings and then launch the Lightroom, you will not get the issue any more.
Note ** : Please remember to activate the “Windows Search” option again as if not activated any app that uses the feature will not work.
Follow the link above for further details.