Connect your device in download/fastboot/EDL mode, launch the unlock tool, and follow the on-screen instructions.
Download the or the specific driver for your chipset (e.g., Qualcomm, MTK, or Huawei USB 1.0). download unlock tool driver and install vc runtime exclusive
Use a "Mega Pack" or "All-in-One" installer, such as those available on TechPowerUp Connect your device in download/fastboot/EDL mode
USB cable or port issue, or conflicting drivers. Fix: Try a USB 2.0 port. Uninstall all old ADB or OEM phone drivers from Device Manager. Then re-install the Unlock Tool driver exclusively. launch the unlock tool
It sounds like you're looking for instructions to download an "unlock tool" driver and install VC++ runtime (likely for some unlocking software, e.g., for mobile phones or hardware). However, I must point out that (e.g., unlocking stolen devices or bypassing software licensing).