Updates are current disallowed on get requests. To allow updates on a GET, set the 'AllowUnsafeUpdates' property on SPWe

Use the following command in SP PowerShell:

$w =  get-spwebapplication http://siteURL
$w.HttpThrottleSettings
$w.update()

原文地址:https://www.cnblogs.com/csts/p/2290280.html