I had an adapter (another make/model) and it would not connect so I tried assigning the IP, netmask and DNS manually and it connected. Later I found remnants of McAfee using Speccy ( https://www.piriform.com/docs/speccy/using-speccy/publishing-a-speccy-profile-to-the-web ) which lead me to run the McAfee Removal tool (see the web.)
After that I was able to return the adapter to stock settings of Obtain an address automatically.
However 20 meters is a bit far at times for WiFi. Get it down to 3 meters for a test.
Hello everyone,
I recently bought a new desktop, but the internet doesn't work when I use my network adapter, which is a TP-Link TL-WN821N. I use windows 7, and this network adapter worked perfectly on my previous computer, which was also windows 7 (Both fully updated).
When I try to connect to my home network, it says "Windows was unable to connect to (network)." When I first bought the desktop, it didn't work at all, but after a week-ish, it started working, although that message showed up from time to time. After that, I was able to use an Ethernet cable for two weeks, but now that I'm back trying to use wireless, it doesn't work at all.
Restarting the modem used to work from time to time, but it doesn't do anything any more.
Updating the driver of my adapter did nothing, but reinstalling worked. Of course, since I'm typing this, you can tell that it only worked until I shut it down.
Deleting the network from Manage Wireless Networks did absolutely nothing.
The Wireless Network Properties on my desktop are the same as everyone else in my house.
I have Network Discovery on.
I've used different USB ports for my wireless adapter.
I'm thinking of buying a 20m+ Ethernet cable to reach my room, but obviously, before buying anything, if there's a problem I might be able to solve without money, I want to fix it.
Windows troubleshooter? Hah what a joke.
If any more information is needed, please go ahead and ask me, since I'm a complete amateur at these kinds of things.

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