ACTIA drivers are often unsigned or test-signed:
As of 2025, Windows 11’s core isolation and Hyper-V virtualization cause severe issues with the . Microsoft is moving toward blocking all legacy serial drivers. actia psa xs evolution 9780z5 driver upd
If you are using the interface with DiagBox (the current PSA diagnostic suite), follow these steps to ensure the driver is recognized correctly: Administrative Privileges : Always run driver installers as an administrator. PSA VCI Driver : In newer versions like DiagBox 9.85, a separate PSA VCI Driver ACTIA drivers are often unsigned or test-signed: As
: Disconnect the VCI from your computer before starting the installation. actia psa xs evolution 9780z5 driver upd