Unrecognized App Error

Does Microsoft Defender SmartScreen give you a warning about an "unrecognized app" when trying to install one of our products?

This seems to be recent behaviour since we renewed our code signing certificate [March 2021].

So, even though we have spent a lot of money purchasing a signing certificate and validating our identity, Microsoft still treats some properly-signed apps as "unrecognised". Thanks a bunch, Microsoft.

The solution is to (1) click on More info.

(2) check that the publisher is "D.I. MANAGEMENT SERVICES PTY LIMITED"

(3) click on Run anyway (if you still trust us!).

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This page last updated 9 September 2025