If the background Windows service crashes, your Jieli driver cannot communicate with the operating system. Press , type services.msc , and hit Enter . Scroll down to find Bluetooth Support Service . Right-click it and choose Restart .
SDK series (the AC4100 is often part of these families). These are generally leaked on Chinese forums (like ) or provided directly by Jieli to registered developers. 2. Understand the Bluetooth Stack
In Device Manager, expand the Bluetooth section, right-click your Jieli/Generic Bluetooth adapter, and select Properties . Go to the Power Management tab and uncheck the box that says "Allow the computer to turn off this device to save power." Conclusion Jieli Ac4100 Bluetooth Driver
If Windows Update fails, you can force the operating system to use its built-in generic Bluetooth stack, which is highly compatible with the Jieli architecture.
Force the driver update manually and choose "Let me pick from a list of available drivers on my computer" → "Have Disk" → point to the Jieli INF file. If the background Windows service crashes, your Jieli
Conflicting drivers or corrupted installation.
In Device Manager, right-click the Jieli Bluetooth device and select Uninstall Device . Unplug your Bluetooth dongle (or turn off Bluetooth), restart your computer completely, and plug it back in. Windows will attempt to reinstall a clean copy of the driver from scratch. Issue 3: Device Constantly Disconnects Right-click it and choose Restart
The Jieli AC4100 series functions as a bridge between your computer's operating system and your wireless peripherals. When you plug a Jieli-powered device into your PC, Windows requires a specific set of instructions—the driver—to communicate with the hardware. Without the correct driver, you may experience:
This is the most common error associated with Jieli chips. It usually means the driver loaded but the hardware failed to initialize.