3.5 .net framework not installing (Error 0x800f0922)

[h=3]I tried to install .net 3.5 or whatever but every time i try to install it it gives me the error code 0x800f0922. [/h]I have no idea how to fix this. Thanks for any help

u'll need a windows cdand an elevated cmd prompt to install .net framework 3.5 using DISM service .In apps search cmd and right click to run as administratorput ur windows cd in and rmmba that drive letter .Type this command : Dism.exe/Online/Enable-Feature/FeatureName:Netfx3/All/LimitAcess/source:X:\sources\sxs replace X with ur drive letter . GoodLuck .