The Resource Could Not Be Loaded Because the App Transport Security Policy Requires the Use of a Secure Connection

The resource could not be loaded because the App Transport Security policy requires the use of a secure connection

I have solved it with adding some key in info.plist.
The steps I followed are:

1. Opened my Project target's info.plist file

2. Added a Key called NSAppTransportSecurity as a Dictionary.

3. Added a Subkey called NSAllowsArbitraryLoads as Boolean and set its value to YES as like following image.

Clean the Project and Now Everything is Running fine as like before.

Ref Link: https://stackoverflow.com/a/32609970

EDIT:
OR In source code of info.plist file we can add that:

<key>NSAppTransportSecurity</key>
    <dict>
        <key>NSAllowsArbitraryLoads</key>
        <true/>
        <key>NSExceptionDomains</key>
        <dict>
            <key>yourdomain.com</key>
            <dict>
                <key>NSIncludesSubdomains</key>
                <true/>
                <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
                <false/>
            </dict>
       </dict>
  </dict>

The resource could not be loaded because the App Transport Security policy requires the use of a secure connection.?

Actually I was trying to update in the wrong info.plist file. My bad :( This is the code I added and it worked fine for me now

<key>NSAppTransportSecurity</key>
    <dict>
        <key>NSExceptionDomains</key>
        <dict>
            <key>test.test.com</key>
            <dict>
                <key>NSAllowsArbitraryLoads</key>
                <true/>
                <key>NSIncludesSubdomains</key>
                <true/>
                <key>NSExceptionAllowsInsecureHTTPLoads</key>
                <true/>
                <key>NSExceptionRequiresForwardSecrecy</key>
                <true/>
                <key>NSExceptionMinimumTLSVersion</key>
                <string>TLSv1.2</string>
                <key>NSThirdPartyExceptionAllowsInsecureHTTPLoads</key>
                <true/>
                <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
                <false/>
                <key>NSThirdPartyExceptionMinimumTLSVersion</key>
                <string>TLSv1.2</string>
                <key>NSRequiresCertificateTransparency</key>
                <false/>
            </dict>
        </dict>
    </dict>

Not allowed to make request to local host - swift

If you edit info.plist from as source code, to allow all domains, change the values like:

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/> 
</dict>

Then it should look like below as Property List:

or

For a better way, you can disable it by default and add exceptions for specific domains like below.

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <false/>
    <key>NSExceptionDomains</key>
    <dict>
        <key>yourdomain.com</key>
        <dict>
            <key>NSExceptionAllowsInsecureHTTPLoads</key>
            <true/>
            <key>NSIncludesSubdomains</key>
            <true/>
        </dict>
    </dict>
</dict>

App Transport Security policy error after setting Arbitrary Loads to YES

This structure is wrong:

    <key>NSExceptionDomains</key>
    <dict>
        <key>The domain</key>
        <dict>
            <key>**my domain here**</key>
            <dict/>
        </dict>
        <key>NSIncludesSubdomains</key>
        <true/>
        <key>NSExceptionAllowsInsecureHTTPLoads</key>
        <true/>
    </dict>

It should be:

    <key>NSExceptionDomains</key>
    <dict>
        <key>The domain</key>
        <dict>
            <key>NSIncludesSubdomains</key>
            <true/>
            <key>NSExceptionAllowsInsecureHTTPLoads</key>
            <true/>
        </dict>
    </dict>

Simulator show error about App Transport Security policy requires the use of a secure connection

you need this in your info.plist to do a http request

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