If you're writing only for your own reference or for an internal IT team, here’s a shorter version:
For supported versions, password resets are often included in your Sage Business Care Plan . For older or "obsolete" versions, you can contact Sage's Expert Services at Sage50US.ExpertServices@Sage.com for a fee. i forgot my peachtree password
Below is a detailed walkthrough covering both scenarios, built-in recovery options, and last-resort measures. If you're writing only for your own reference
If you are completely locked out of the Manager account, you may need specialized software to read the underlying data files. built-in recovery options