I have created the SSL decryption certificate and applied it using group policy. When testing I have several workstations that work with no issue but many others that recieve certificate errors. I cannot find any difference in the browser setup, the SSL certificate is in the workstation trusted root store where it should be. It looks like a 50/50 success rate. Windows 10 workstations, some on 1809 and some on 1903 with the same mixed results. I am at a loss, anybody had this issue?
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What browser are you using for these tests? Some browsers will not, by default, look at the machines certificate store and will use their own.
Odd that the guide you were following left that out, as it's a requirement to get this to function correctly. If you allow the installation of Firefox you'll also need to utilize the ESR version or do a little bit of manual work for FireFox to trust your cert; by default FireFox will not read the Windows cert store.
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