So I was having an issue after creating a local user on my box with all kinds of privledges. The issue was that this user couldnt access the secret on the master secret server(ESSO was running as this local user);
Error Code: 0xC0002A1F, Cannot perform encryption or decryption because the secret is not available from the master secret server. See the event log for related errors.
The consensus online is to restore the master secret. This means going to the ESSO snap in (or cmd) and right click 'Restore'. Then locate the backup file you want to restore from. The location of your backup files(*.bak) in case you don't already have one you set up or you don't know, is:
C:\Program Files\Common Files\Enterprise Single Sign-On\SSOXXXX.bak
where the XXXX is generated by Biztalk when it creates the backups. I used the most recent backup file. I didnt know the password, then noticed, from the password secret, that the password was an old users password. After using the correct password i successfully restored and everything worked fine. I will say that if you use the wrong password you get an error of 'Bad Data' from ESSO.