Encryption Error Using CryptProtectData

Hello and thank you all in advance for any assistance provided. I have a two node SQL 2005 cluster running (1 node is failover). I have a job that I am trying to run using a proxy account. The credential account that is used within the proxy is a domain account and I have ensured that the passwords are all correct. The problem I am experiencing is that whenever I try to run a job, it fails with the following message:

Unable to start execution of step 1 (reason: Error authenticating proxy ROCHARR ("just an example"), system error: Logon failure: unknown user name or bad password.). The step failed.

This is also displayed in my SQLAGENT.OUT log file:


SQLServer Error: 22046, Encryption error using CryptProtectData. [SQLSTATE 42000]

In the event viewer, I also recieve failure audits when I run the job that look like this:

Logon Failure:

Reason: Unknown user name or bad password

User Name: ARR

Domain: ROC

Logon Type: 8

Logon Process: Advapi

Authentication Package: Negotiate

Workstation Name: HOSTA

Caller User Name: ITUSER

Caller Domain: ROCH

Caller Logon ID: (0x0,0x22EF57C8)

Caller Process ID: 5780

Transited Services: -

Source Network Address: -

Source Port: -

Now I have made sure that the "ITUSER" is trusted for delegation since that is the account that is running the SQL Server Agent Service. I have all the proxy settings configured correct in the job itself, so it shouldn't be that. Any assistance is greatly appreciated as I am going crazy with this.

Thanks again,

Trevor