Azure AD Connect unable to sync built-in Administrator account

In a recent project I came across a scenario where there was a requirement to synchronize the built-in Administrator account from the on-premise Active Directory into Azure AD.  Reason being was the built-in Administrator account was mailbox enabled, and there was a requirement to migrate the mailbox to Exchange Online (Office 365) read more

Azure AD Connect – The remote server returned an error: (407) Proxy Authentication Required

Azure AD Connect – The remote server returned an error: (407) Proxy Authentication Required

Problem

Get the following error running Azure Active Directory Connect

“The remote server returned an error: (407) Proxy Authentication Required”

1

Environment

Internet access via internet explorer is working on the server where I’m running Azure AD Connect

2

There is a proxy server in the environment (WebMarshal in this case), and a PAC file is used to configure the proxy settings read more