以管理员身份运行如下PowerShell命令，清除Skype for Business缓存记录
#以管理员身份运行如下PowerShell命令，清除Skype for Business缓存记录
Stop-Process -Name "lync*"
Stop-Process -Name "outlook*"
Stop-Process -Name "UcMapi*"
Remove-Item –path "$env:USERPROFILE\appdata\Local\Microsoft\Office\16.0\Lync\*" –recurse
Get-Item -Path "HKCU:\Software\Microsoft\Office\16.0\Lync\*" -Include *@*| Remove-Item -Recurse
Get-Item -Path "HKCU:\Software\Microsoft\*" -Include MSOIdentityCRL | Remove-Item -Recurse
Get-Item -Path "HKCU:\Software\Microsoft\Office\16.0\Common\Identity\Identities\*" -Include *adal*| Remove-Item -Recurse
Get-Item "cert:\CurrentUser\My\*" | Where-Object {$_.Issuer -like "CN=Communications Server"} | Remove-Item
Skype for business-Screen sharing option not available