1.If your computer do not installed .NetFramework4.0,please install first. 2.If install .NetFramework4.0 failed and have error about WIC.please return to install WIC(windows image component)wic_x86_en.exe; 3.After installed .NetFramework4.0, click the not restart button to continue install software follow-up components 4.If you have installed ZKAccess4.0 or ZKAccess5.0,Please stop the related service or uninstall it.