Category Archives: Exchange 2016

Microsoft Exchange: Renew the Microsoft Exchange Server Auth Certificate

In Microsoft Exchange on-prem, there is a self-signed certificate called Microsoft Exchange Server Auth Certificate This not bound to any IIS web site, but still needed for authentication purposes. It is valid for 5 years. If the certificate has expired or is about to expire, you can renew it with the following procedure: Start the Exchange Management Shell and type: (Get-AuthConfig).CurrentCertificateThumbprint | Get-ExchangeCertificate | Format-List This should show you the details of Read more [...]

Microsoft Exchange: Renew internal backend certificate

In Microsoft Exchange on-prem, there is an internal certificate that is bound to the back-end web site. This certificate is self-signed and valid for 5 years. It is called Micorosoft Exchange The subject of the certificate is the server name itself. Find below the procedure to renew this certificate. It does not matter if the certificate is already expired or still valid. Start the Exchange Management Shell Get the thumbprint of the current certificate: Get-ExchangeCertificate | where Read more [...]

Microsoft Exchange: Increase Maximum Message Size to 100 MB

Sometimes, the default maximum message size (including attachments) in Exchange is not enough (30 MB is the standard). To increase this to 100 MB, do the following: First check the current maximum size on all relevant Exchange components: Get-TransportConfig | ft MaxSendSize, MaxReceiveSize Get-ReceiveConnector | ft Name, MaxmessageSize Get-SendConnector | ft Name, MaxMessageSize Get-Mailbox Administrator |ft Name, MaxsendSize, MaxReceiveSize Then set it to 100 MB for all components: Set-TransportConfig Read more [...]

Exchange 2016: "There is a pending reboot from a previous installation of a Windows Server role or feature"

When I wanted to install CU11 for Exchange 2016, at the Prerequisites Check, I got the following error message: "There is a pending reboot from a previous installation of a Windows Server role or feature." I restarted the server twice, but still got the same message. After messing around with some registry keys and still no luck, I looked at the error message in more detail. The key part is "installation of a Windows Server role or feature". So this was not talking about a normal pending reboot Read more [...]