Ad-Hoc and Enterprise signed apps crashing on launch screen in iOS 13.3.1

Question

As i updated my iPhone XS Max from 13.3 to 13.3.1 I'm getting crash on every Same Signed Apps and Self-signed Apps.

So I thought it is some problem with their certificate, then I tested those apps using an iPhone X running iOS 13.3.
The result was fine and apps worked well, as I found out the problem was not certificate but a change in Apple's mechanism for iOS 13.3.1 that does this problem.

And the enterprise signed apps crashes are not because of revoke.
Certificates were fine and I did not getting: Unable to Verify App

What i did and was not helpful for me:

• Opening the app again
• Free UP RAM
• Shutdown and start again
• Force Restart
• Reset all settings

Answer 1

Solution for Self-signed apps

I could solve the problem for Self-signed Apps and that was because of expiration of ad-hoc distribution expiration days.

Each iOS app that you sign with Apple developer program is available for 365 Days from the time you sign and install that.

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Why this happend?

I thought it occurred because i changed my date and time settings on my device from 2020 to 2022 for a test purpose.
This action expired my sign and I was getting crash on launch screen. That was because apple interacting with device time for checking validation of sign.

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How to fix this?

I fixed the apps by signing them again with same certificate.
Without removing them.