Is it happening with case closed date only or other's too? like updated date etc have you checked?

How is the date calculated? It maybe a simple scripting error which has forgotten some variables start counting from 'zero' rather than '1'.

It is only happening with the case closed date. The time stamp and updated date are correct.

I am not sure how the date is calculated. I couldn't find anything in the system admin/developer/user guides.

Ok try following:

1. Try to check if this is an issue with your current CRM version and patch by checking on a new same version + patch instance.

2. Put CRM logging on full and check what update query is passing in to database while it is updating Caseclose date, to confirm if correct value is moving in to DB.

3. Try fiddler tool to check what's happening between browser and IIS.

4. Otherwise you log a support case to your local support.

Typically the values case_closed is set by a workflow rule. Are you using workflow?

In the workflow area have a look at the workflow rule for cases and the workflow rule that manages the closure.

It is likely to have 2 actions associated with the workflow rule.

1) "Set Column Value" for the case_status field which sets the value to 'Closed'

and

2) "Set Column Value" for the case_closed field. This will have a integer value describing the 'off-set' from now. If the case is to be marked closed immediately with the current date and time the value should be zero. (0).

If this is the situation and the dates are still being recorded in the wrong month then I think you should follow Sharad's suggestions.

- thank you, we are using workflow and the "Set Column Value" for case_closed is (0). I will try 's suggestion

7.2 patch C worked like a charm! the case_closed field is updating with the proper date and time. Thank you!