Handsfree Telephony Parameter Is Incorrect //top\\ Jun 2026

Corrupted drivers are a frequent culprit for "parameter" errors. Bluetooth Handsfree Telephony cannot be selected again

If nothing else works, a missing registry entry may be the cause. handsfree telephony parameter is incorrect

Note: If the Services tab is missing, your Bluetooth driver is generic. Proceed to step 4. Corrupted drivers are a frequent culprit for "parameter"

The error usually lives in the headset’s specific driver entry. handsfree telephony parameter is incorrect

Sometimes the service is present but has a bad parameter.