Hi Guys, I encountered a weird problems, each time when I copy files from one folder to the other, my WIFI will get disconnected. And I have to manually click and select the SSID to connect it back. I using Window 10 and TPLINK T4U AC1300 MU-MIMO adapter and it wasn't my home WIFI issues at all. My Asus router still able to allow my phone and other notebook to surf net without interruption, so it must be something to do with my own rig. Please helps.

Please provide more information such as the folder was the built-in storage or it was a shared drive (another computer) or it was from an External USB storage ?

Also the Wifi was connected via the built-in Wifi Adapter or an External USB Wifi dongle ?

Have you tried doing the same with a LAN cable ?

You can also check on the following:-

1) Wifi drivers was not updated by Windows Updates, if yes try rollback the updates.
2) Reinstall the Wifi drivers from the original version (from manufacturer).

Give it a try & update back here again.

Hi, it was built-in storage, however, sometime it was google drive sync folder. The wifi connected via external USB wifi dongle. I never try with LAN cable cause the desktop is far away from router. WiFi driver already updated, still the same. Reinstall the WiFi driver from TPLINK also.

Check the event viewer log, whatever happened to the wifi adapter will be recorded in there.

I suspect it's using broadcom chip, i had one wifi adapter with same issue too. it turns out almost everyone on the internet facing the same problem.
Broadcom chip sucks...

Next time when buying wifi adapter, check the latest driver update date, if too old, dont buy, dont expect them to write a new driver just for you lol

Get Intel, expensive but driver support very good.

Please do try out the LAN cable connection test, bring it over near the router... its only for a few hours of test only.

Of course google drive sync folder will have intermittent issues since your wifi connection is not stable.