Hello All Applying the Latest Firmware from the below TP link Advisory for Frequent DNS Requests on Related Routers has fixed my issue for now https://www.tp-link.com/us/support/faq/3329/

@Kevin_Z No Reply yet from any of the support engineers. I can share my contact details if required in a DM

@Kevin_Z Hi Kevin, Its looks like connecting the System directly to the Router via Cable has worked to update the Antivirus, Please let me know what need to be done to fix the same on Wireless Network

@Kevin_Z Thanks for your promt response Please find my answers inline Can you please confirm where were you updating the antivirus definitions? For the Windows Defender? If possible, we would like to...

Hello All, I am using my Office laptop which has got Windows Defender, I am unable to update the antivirus definations when using the Wireless Router Tplink Ax73 While when I update the same...