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ConfigMgr Client Certificate (PKI) Value is None

ConfigMgr Client Certificate (PKI) Value is None

Today I had a problem with a workstation that didn’t want to communicate with the SCCM server. After some hours digging in the too many logfiles from SCCM, I finally found the problem and also the solution. First of all the problem. I make use of the SSL certificate, so at the “Client Certificate” property must be PKI instead of None. After looking around in the ClientIDManagerStartup.log, it doesn’t appear to have an issue detecting and selecting the PKI certificate. But in the MP_RegistrationManager.log, I see the following error: So I wanted to get started again from scratch with the…

How to renew Let’s Encrypt Certificate

Today I received another email from the Let’s Encrypt Expiry Bot that one of my certificates on my Synology NAS will expire in 0 days. Mmmm… that’s odd. I thought that the certificate automatically will be renewed every 3 months. So I logged in the DSM interface, went to de certificate store and indeed. The certificate will expire tomorrow. But wait a minute… why is the certificate not renewed? Well…. I have a simple website on a Raspberry Pi, on a different subnet, forwared with port 80 on my router. And what port does Let’s Encrypt use for (re)new the…