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Enabling self-signed certificates in iOS 15

How do I enable trusting self signed certificates in iOS 15.2.1? I am trying access a CalDAV account on a personal Synology server.

Posted on Feb 14, 2022 6:05 PM

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Posted on Feb 24, 2022 5:35 PM

This is a real pain because apple has intentionally made it a pain. No other product makes it as difficult as they do.


You have to download the certificate itself, just the raw pem file, either via a browser or some other method. Via a browser is the easiest way. If you're self-signing certs, you should be able to set up a little home webserver and literally put the cert in the root of that and then just hit it via safari on your phone. Once that happens, it will be downloaded into the profiles. Open settings and use the search at the top to look for profiles. Open profiles and "install" the profile for your self-signed cert. Then go to settings->general->about->certificate trust settings (all the way at the bottom) and flip the toggle to trust all roots for that profile.

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Question marked as Best reply

Feb 24, 2022 5:35 PM in response to Declanthedog

This is a real pain because apple has intentionally made it a pain. No other product makes it as difficult as they do.


You have to download the certificate itself, just the raw pem file, either via a browser or some other method. Via a browser is the easiest way. If you're self-signing certs, you should be able to set up a little home webserver and literally put the cert in the root of that and then just hit it via safari on your phone. Once that happens, it will be downloaded into the profiles. Open settings and use the search at the top to look for profiles. Open profiles and "install" the profile for your self-signed cert. Then go to settings->general->about->certificate trust settings (all the way at the bottom) and flip the toggle to trust all roots for that profile.

Enabling self-signed certificates in iOS 15

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