Error 0xc0000135 Server Manager is not opening
Error 0xc0000135
CMD in Admininistrator
Run the below two command on the target server....
DISM.exe /online /enable-feature /all /featurename:NetFx3
DISM.exe /online /enable-feature /all /featurename:NetFx4
Source: https://www.youtube.com/watch?v=CnODg28Nug0