GPEDIT.MSC
Start > Run > GPEDIT.MSC Computer Configuration > Windows Setting > Security Setting > Local Policies > Security Options Network security:Lan Manager Authentication level Change it to : Send LM & NTLM Responses
Start > Run > GPEDIT.MSC Computer Configuration > Windows Setting > Security Setting > Local Policies > Security Options Network security:Lan Manager Authentication level Change it to : Send LM & NTLM Responses