Windows remembers every Wi-Fi password you've ever used. This will reestablish the connection to these networks. This will allow you to view the saved password of any network you have ever connected to on your Windows PC.
You can view saved passwords with built-in command-line tools in Windows. However, we recommend the free application WirelessKeyView from NirSoft. It's a lightweight tool that you do not even have to install to use it. Just download it, open the ZIP file, and then double-click the included EXE file. It then displays a list of the network names and passwords stored in Windows.
The Network Name column displays the name of the Wi-Fi network, that is, the SSID. In the Key (ASCII) column, search for the network name to find the password associated with a network. This is the password you enter to connect to this network.
To save this information, you can choose File> Save All Items. You will receive a text file with this information so that you can take it to a new PC or save it for later.
Using the Command Line
In the default Windows 10 control panel, you can only see the password of the Wi-Fi network you are currently connected to. If you do not want to download third-party software, you must use command-line tools to determine this information.
Open a command prompt or PowerShell window to search for a third-party password on Windows without software. To do this, right-click the Start button, or press Windows + X, and then click PowerShell.
Run the following command to view the list of network profiles stored on your system:
netsh wlan show profiles  List of wireless profiles stored in PowerShell = "width =" 650 "height =" 290 "src = "/pagespeed_static/1.JiBnMqyl6S.gif" onload = "pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon (this);" onerror = "this.onerror = null; pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon (this);" />
Find the Name the network for which you need the password, and run the following command, replacing "NETWORK" with the name of this network:netsh wlan show profile name = "NETWORK" key = clear
Look in the output under "Security Settings." The "Key Content" field displays the wireless password in plain text.
Repeat this process for each WLA N network you are using The password for search.
If you have not saved it in Windows, there are many other ways to search for a forgotten Wi-Fi password, even on another device (such as a Mac) on the web of a router interface or even on the PC Router itself printed.
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