Hello, I have some machines that I can't connect to a network share after a gpo is applied. The GPO sets the Network security: LAN Manager authentication level is set to Send NTLMv2 response only, Refuse LM & NTLM. This is the error I get when I try to map to a network drive :The mapped network drive could not be created because the following error has occurred: The account is not authorized to log in from this station

Hi, This may be caused by the Network Drive cannot support the NTLMv2 authentication. For more information, please access the link below. http://technet.microsoft.com/en-us/library/cc738867(WS.10).aspxPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.