Hi Friends...This video tutorial is about "How To Fix .Net Framework 3.5 Error 0x800f081f In Windows 10 (Simple & Working Way)".
First of search for "microsoft-windows-netfx3-ondemand-package.cab download free"...And download it from any site for free...
Type Command :
Dism.exe /online /enable-feature /featurename:NetFX3 /source:C:\ /LimitAccess
and then hit enter key to execute the cmd...