How do I delete outdated S/MIME certificates in my iphone 5s

So, does resetting all settings remove certificates?

Unknown for iOS 9.3.

Older iOS required a complete wipe and reinstall!

Please file bug reports and report on your experience.

I reported the bug.

I ended up changing the date on my MBP to BEFORE my certificate expired.

Installed my old certificate and signed an email with it and sent it out to the other iPhones.

I now can view that certificate through the email on the other iPhones and click the "remove" button. That took care of my issue.

A pain but better than a wipe/reinstall.

Did you receive any response regarding the bug report?

In Settings > General > Profiles check for the expired certificate/profile you would like to delete. Tap the profile and you'll see a remove option. If you have no old profiles the Profiles option doesn't even appear under General Settings. Because my certificate was associated with a profile it just hangs on to the old certificate. I was then able to send a signed email to my iPhone from my MBP. Unfortunately I can see the certificate and hit install but it just never actually installs so still searching for a complete solution.

Ok quick edit - I followed the instructions on the site noted below to install the certificate and it worked perfectly. I had to use a second secure email and password protected the .p12 but it worked.... macwhiz.com/blog/2014/11/18/apple-s-mime

Thanks for that link, I think the procedure the poster mentions is preferable to deleting old profiles as, I believe, by removing your old certificate you will no longer be able to read any e-mails that might have been sent to you and encrypted using your old certificate! Instead, you can select the certificate you want to use for signing and encrypting.

Great post!

I have just run into the same problem on a iPhone 6s running iOS 10.1.1.

Obviously this issue has still not been fixed. Apple Support was not able to help. I got forwarded to a senior iOS Advisor right away and it took 40 minutes to get the advice of resetting all settings - which did not do the trick.

I am reluctant to wipe the entire phone, in particular as others have tried it without success.

I don´t have access to the email with the expired signature anymore and also no means to setup a backdated system to recreate it. Hence the only option that has been reported to work is of no use for me.

Just filed a bug report with Apple but from my encounter with the Apple Support team, using encryption on the iPhone seems to be not very frequently used and hence changes of that getting fixed soon seem rather slim.

It is a shame that Apple promotes privacy and encryption even against authorities and then leaves such fundamental functions defective for users.

As a manager I am alway told to "walk the talk". If Apple is serious about encryption then they better get their act together quickly.

You can delete them manually by going into: Settings --> General --> Profiles, selecting the profile you want to delete and pressing "Delete Profile"

That's the way to delete your own S/MIME certificates with the private key.

The problem adressed in this thread is how to delete the S/MIME certificates with the public key of your contacts. ;)

This bug is still there in iOS 11 😮

The problem persists in iOS 11.2.1. I have filed a bug as well. Any updates on your side?

It's still broken.

It sort of worked for a while, and Apple closed my ticket.

I'll re-open my ticket or file a new report.