Strange Read-Only Behaviors of Site Collections
[SharePoint 2016, 16.0.5530.1000] Suppose you have a site collection in read-only mode and want to remove that status. Normally this is achieved by selecting the " Not locked " option on the " Site Collection Quota and Locks " page in Central Admin or by running one of the following PowerShell commands: (Get-SPSite "<https://siteCollectionUrl>").ReadOnly = $false or Set-SPSite "<https://siteCollectionUrl>" -LockState Unlock There is also the LockState parameter of the Set-SPSiteAdministration command that can be utilized, but I did not try it in this particular case. Nonetheless, there is a rare case where neither of these PowerShell commands works. They do not output any errors in PowerShell or even in verbose-enabled ULS logs when they fail to run, and the interface in Central Admin is grayed out as follows: The site collection is truly locked for read-only access, as site collection admins do not see the full site menu. Additiona...