Microsoft has released security updates for vulnerabilities found in:
Exchange Server 2013
Exchange Server 2016
Exchange Server 2019
These updates are available for the following specific...
Updated May 04, 2021
Version 8.0
Blog Post
I suspect I'm also having problems after the patch. I used to re-link Linked Mailboxes multiple times a week but today, suddenly today (after installing the patch yesterday) the same command does not work and I get the following error and it says there an errors Proxy method RPS and I assume RPS means Remote PowerShell?
Error on proxy command 'Set-Mailbox -Identity:'Test.User@domain.com' -LinkedDomainController:'dc.accountforest.net' -LinkedMasterAccount:'AF\testuser'
-LinkedCredential:'System.Management.Automation.PSCredential' -Confirm:$False -Force:$True' to server DC.resourceforest.net: Server version 15.02.0792.0000, Proxy method RPS:
Cannot process argument transformation on parameter 'LinkedCredential'. A command that prompts the user failed because the host program or the command type does not support user interaction. The
host was attempting to request confirmation with the following message: Enter your credentials..
+ CategoryInfo : NotSpecified: (:) [Set-Mailbox], CmdletProxyException
+ FullyQualifiedErrorId : Microsoft.Exchange.Configuration.CmdletProxyException,Microsoft.Exchange.Management.RecipientTasks.SetMailbox
+ PSComputerName : exchange.resourceforest.net