Get-Mailbox -ResultSize unlimited | Set-CASMailbox -OWAEnabled $false
批量启用如下：Get-Mailbox -ResultSize unlimited | Set-CASMailbox -OWAEnabled $true
Get-Mailbox -ResultSize unlimited | Set-CASMailbox -OWAEnabled $true
批量禁用/启用所有用户OWA功能
原文：https://blog.51cto.com/3032439/2435996
