I receive "Authentication Failure" error when connecting to SharePoint

To fix "Authentication Failure" error that appears during connection to SharePoint change the following setting on the Windows computer that runs MetaVis (Mostly applies to Win7 and Win2008 R2):

1. Open Control Panel

2. System and Security

3. Administrative Tools

4. Local Security Policy (can take a minute to load)

5. Local Policies

6. Security Options

7. Network security: LAN Manager authentication level 8. Change the setting to be: "Send LM & NTLM - use NTLMv2 session security if negotiated"

After changing this property try to reconnect to the site again.

In the  case Local Security Policy is not available on the computer (for example, in case of Windows 7 Home Premium Edition), run registry editor (type regedit in the command line or in Run... prompt). Find the node:

HKEY_LOCAL_MACHINE / System  / CurrentControlSet / Control / Lsa

Click on Lsa node and create there a New DWORD (32-bit) Value LmCompatibilityLevel with the value 1. It will have the same effect as setting local security policy in Win7 Professional. It should resolve Authentication Failure issue. Below is the picture of registry editor with this value already set.