Option 1 (Automatic): 

Step 1: Download and run the fix

Download and extract Network_Security_Reset.zip. Double click Network_Security_Reset.reg to correct the "Network Security: LAN Manager authentication level".

Step 2: Reboot

Reboot your computer to see the settings take effect.

Option 2 (Manual):

Step 1: Open Group Policy

Open the start menu and begin typing, "Group Policy", choosing the Group Policy item once it is listed.

Step 2: Navigate to Security Options

Navigate to Local Computer Policy > Computer Confguration > Windows Settings > Security Settings > Local Policies > Security Options and find "Network Security: LAN Manager authentication level"

Step 3: Select Network security: LAN Manager authentication level

Double click the setting and select "Send NTLMv2 responses only":

Choose OK and close out, the setting is complete.