当网络环境为内网时，有时访问OWA站点一直卡在Office Web App 那里。 这是因为SharePoint有一个证书需要联网检索

此环境为SharePoint 2013

通过下面的三个步骤 可以解决此问题

步骤 1: (在"“开始”屏幕 "上左键单击(在"“开始”屏幕"中)

步骤 2: (在"SharePoint 2013 命令行管理程序 "上右键单击

步骤 3: (在"以管理员 身份运行"上左键单击

步骤 4:(在"管理员: SharePoint 2013 命令行管理程序"上输入：

$pfxpath = 'C:\SPRA.cer'
$rootCert = (Get-SPCertificateAuthority).RootCertificate
$rootCert.Export("Cert") | Set-Content $pfxpath -Encoding Byte

[System.Security.Cryptography.X509Certificates.StoreLocation]$StoreLocation = 'LocalMachine'
$StoreName = 'root'

Add-Type -AssemblyName System.Security
$certificate = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2
$certificate.Import($pfxpath)

$Store = New-Object system.security.cryptography.X509Certificates.x509Store($StoreName, $StoreLocation)
$Store.Open('ReadWrite')
$Store.Add($certificate)
$Store.Close()