I bumped into this error today with the Active Directory Forest Publishing to untrusted forest using a specific account instead of the computer account of the site server. HRESULT=0x8007052E simply means that incorrect username or password.
Resolution: Reconfigure the user account and password and verify the LDAP. For example, LDAP://datacenter.domain.com/CN=System Management,CN=System,DC=datacenter,DC=domain,DC=com
Tips: Type the complex password in a notepad and then copy and paste it to the password input :)