The
method is as follows link
includes method one that executes enable Silverlight’s file
method two, manually modify the registry
https://support.office.com/zh-cn/article/microsoft-office-%E4%B8%AD%E8%A2%AB%E9%98%BB%E6%AD%A2%E7%9A%84-flash-%E5%92%8C-silverlight%EF%BC%8Cshockwave-%E6%8E%A7%E4%BB%B6-55738f12-a01d-420e-a533-7cef 1ff6aeb1?omkt=zh-CN& ui=zh-CN& rs=zh-CN& ad=CN
if Silverlight is damaged, fix
with the following link
https://support.microsoft.com/zh-cn/help/2608523/how-to-clean-a-corrupted-silverlight-installation-and-then-reinstall-s