I have three local account in my computer. One is administrator and other two are standard user. I am currently in workgroup and I need to change to domain and the problem is that I forgot the password of administrator account but I have access to Standard User account. How to access the domain account in this scenario? thanks in advance.

Give try password recovery tools: http://pcsupport.about.com/od/toolsofthetrade/tp/passrecovery.htm http://www.petri.co.il/top-4-windows-password-reset-tools.htm Regards Milos

Hi, It seems impossible to join domain without administrator account. Regarding the password issue, please refer to What to do if you forget your Windows password. Hope this helps.