I have a question regarding why I cannot see/import our new "Developer ID Installer" cert in keychain. I created an Install cert a month or two back no issues. There is 1 difference this time - I am no longer the Account Holder, so steps followed were:- I created CSR from my keychain. I asked new Account Holder to use my CSR to create the Developer ID Installer certificate on Developer Portal. Account Holder downloaded and shared the .cer file with me. I imported the .cer file to my keychain. I tried both double clicking the .cer file and also tried by using the import option on keychain. I restarted Keychain and Mac but still the new cert is not showing in either My Certificates or Certificates. I used the above steps for other cert types and it works fine, i.e. User 1 created CSR and User 2 creates iOS Distribution cert from User 1 CSR. In this case I can import the .cer fine in User 1 keychain - no issues. Can you advise if Dev ID Installer cert is different and why I cannot import to my Keychain. Maybe it is importing but I just cannot view it ? Appreciate any advice.

Hi, Created new "Dev ID Application" certificate and it shows in my local Keychain where I created CSR as "Certificate is not trusted". I also see some Push Notification certs created recently have the same warning. Items tried. Installed new Intermedate certs as recommended in post https://developer.apple.com/forums/thread/672933 :- WDRCA-G3 expiring 20-Feb 2030 installed on (Login -> Certifcate) WDRCA expiring 7-Feb 2023 installed on (Login -> Certifcate) Deleted and reinstalled both of the above WDRCA certs Restarted Keychain & Mac several times. The same warning is seen on each of Mac nodes that I have installed the new certs on. Does anyone know how to resolve or have any suggestions on how I can debug this problem.