How to Fix ‘The Local Security Authority Cannot be Contacted’ Error on Windows?

 When you attempt to sign in to a different system through a remote desktop connection, you may get an error stating, ‘The Local Security Authority Cannot Be Contacted.’ This error pops up on systems running on Windows. If you want to know how to troubleshoot this error, then check out the fixes mentioned below.

Modify the DNS Address

You should modify the DNS address by following these instructions available below:

1.   Firstly, hit the Windows and R hotkeys simultaneously for launching the Run prompt.

2.   Thereafter, insert ‘ncpa.cpl’ in it and select the OK button to launch the ‘Internet Connection Settings’ screen.

3.   Alternatively, this process can also be done by launching the Control Panel manually. Move to the settings of ‘View by’, go to Category, then select the Network and Internet.

4.   You should choose the option of ‘Network and Sharing Center’ in order to launch it.

5.   Now, attempt to find the option of ‘Change adapter settings’ at the left side menu, then select it.

6.   In the Internet Connection screen, twice click on the active network adapter, then click on the button of Properties, in case you have admin permissions.

7.   You should find the item of ‘Internet Protocol Version 4 (TCP/IPv4)’ from the list, choose it, then tap the button of Properties.

8.   You should go to the tab of General and check the “Use the following DNS server addresses” option.

9.   Then adjust ‘Alternate DNS server’ to be 8.8.4.4 and ‘Preferred DNS server’ to be 8.8.8.8.

10.                Now, keep the option of “Validate settings upon exit” marked and select the OK button to save the changes instantly.

Turn on Remote Connections in Group Policy Editor

You should turn on remote connections in Group Policy Editor by following these instructions available below:

1.   Hit the Windows and R hotkeys simultaneously for launching the Run prompt.

2.   After that, input “gpedit.msc” in it and hit the Enter button to launch the tool of Local Group Policy Editor.

3.   In the Local Group Policy Editor, reach the left side navigation panel, and beneath the ‘Computer Configuration’ section, click on the Administrative Templates.

4.   Click on the ‘Windows Components’ option.

5.   Go to the ‘Remote Desktop Services’ option and choose the ‘Remote Desktop Session Host’ option.

6.   Click on the Connections option.

7.   You have to choose the folder of Connections.

8.   Navigate to the policy of “Allow users to connect remotely by using Remote Desktop Services” and twice click on it, then select the option of Enabled.

9.   Later, save the changes,

10.                Lastly, restart the system.

Enable the Connection in System Properties

1.   Select ‘This PC,’ and right-click on it, then select the Properties option.

2.   Now find the Change Settings option and choose it.

3.   Once you reach the System properties’ Remote tab, click on the ‘Allow remote connections to this computer’ option.

4.   You should also untick the ‘Allow connections only from computers running Remote Desktop with Network Level Authentication (recommended)’ box.

5.   Now, save the changes.

Harry Williams is an inventive person who has been doing intensive research in particular topics and writing blogs and articles on webroot.com/safe and many other related topics. He is a very knowledgeable person with lots of experience.

Source : How to Fix ‘The Local Security Authority Cannot be Contacted’ Error on Windows?