If you still use a J-Link probe or related hardware, you should not delete the driver. Instead, replace the old version with an updated, HVCI-compliant variant.
Traditionally, sending debug messages from an embedded microcontroller (MCU) to a PC requires a UART (Serial Port). This has significant drawbacks:
Successful output includes:
Execute the deletion command (replace XX with your specific driver number): pnputil /delete-driver oemXX.inf /uninstall /force Use code with caution.
: It enables integrated development environments (IDEs) like Keil MDK, IAR Embedded Workbench, or SEGGER Embedded Studio to flash firmware onto ARM, RISC-V, and other microcontrollers. jlinkx64sys
Beyond the kernel driver, J-Link's 64-bit architecture includes JLink_x64.dll —a that provides a standardized API for application-layer communication with the J-Link probe. This DLL allows programs to access J-Link functionality without having to implement low-level USB protocols themselves.
High-speed JTAG requires stable target clock. If the target CPU enters an invalid PLL state, jlinkx64sys can issue an adaptive clocking fallback ( -speed auto ) to establish basic communication before reflashing. If you still use a J-Link probe or
Verify that the signer is listed as . Common JLinkx64.sys Errors