関連ワード:  error code 0x800f0954 when installing .net 3.5    error code 0x800f0954 while installing .net 3.5    .net 3.5 feature installation failed 0x800f0954    0x800f0954 error installing .net 3.5  
結果 : error code 0x800f0954 when installing .net 3.5