To validate Microsoft signature, you must have Microsoft certificate verification up to date. That works for everyone like that. The only reason you go in repair mode with DL is because our graphics drivers are loaded during startup and your other drivers are most likely lower down in the food chain. And your machine is outdated.
DisplayLink did not write the digital signature verification system for Windows.
You are most welcome to flag it to Microsoft, but I can foresee them saying you should keep installing their cumulated security patches for "your comfort and safety". They advised us to do what we did for 7.9 M4.
Having a signature not validating would not completely crash a hard drive. It's a just a file deletion or roll back matter. Microsoft designed that to avoid system corruption and if you don't pass the list of WHQL tests (Win10 is different tests), they don't sign your drivers.
As already commented, for 7.9 M5, we will go against Microsoft recommendation and include our signature again on top of the one of Microsoft. Now Windows 10 TH2 is much more prevalent than the Windows 10 TH1 RTM, I am a bit less concerned about issues on it.
Windows 10 users have asked for 7.9 M4. So if I remove it, they will be unhappy.
The only way to please everyone was that everyone had an up to date machine with all Microsoft patches. Or have a digital signature verification which worked properly out of the box in Windows 10.
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