What Is WPAD
What is WPAD?
Tip: To get information about other protocols, you could go to theMiniToolofficial website.
How Does WPAD Work
WPAD can use DNS or DHCP to locate the PAC file.

This feature is most commonly called auto-detection and is often labeled as such.
Browsers that support both methods will first check for DHCP assignments before attempting the DNS method.
The PAC file must have the file name wpad.dat for the DNS method to work.

Should You Disable WPAD?
Thus, you had better disable WPAD.
How to Disable WPAD
you’re free to disable WPAD by the following 3 methods.
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you’re able to choose one of them based on your needs.
But you should probably notice that all of the methods require an administrator account.
Way 1: Disable WINS/NetBT
Step 1: Press theWindows + Ikeys together to openSettings.
Step 2: Go toNetwork & Internet > Advanced online grid tweaks > Change adapter options.
Step 3: Next, right-hit the web link adaptor you use to connect to the Internet to chooseProperties.
Step 4: Double-clickInternet Protocol 4 (TCP/IP)and clickAdvanced.
Step 5: Go to theWINStab and check theDisable NetBIOS over TCP/IPoption.
Step 1: Open theRunbox and typegpedit.msc.
ClickEnable, and clickOK.
Here are the methods to fix it.
Step 1: Open theRunbox by pressing theWindows + Rkeys, typeregeditand press theEnterkey.
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinHttpAutoProxySvc
Step 3: Find and double-clickStart REG_DWORDto get into edit mode.
Set the value to4.
Final Words
Now, you have got basic information about WPAD.
I hope that this post can be helpful to you.