I need to reset the administrator account of our domain. there are no service accounts that depends on it.

should i just change it from AD users and computers or should i do something before.

Also i need to know if it will affect other services like exchange or SCCM

Thanks

Hello

It does not affect anything

Nothing from the Exchange Side should be hurt.  But anything else in your environment that uses that account for anything will probably be effected.  Unfortunately there isn't a way for me to tell you what to check, b\c the account can be used almost anywhere.