BusinessObjects Board

After Microsoft patching, getting errors when running Oracle based reports

Business Objects 4.2, SP6 - fix pack 5.
Windows Server 2012

On Monday, a number of Microsoft security patches were installed to our Business Objects server.
All users of Oracle reports were shown an error of Credentials Retrieval failed (ORA - 12638).
This has been resolved, by uninstalling the patches and amending the SQLNET.ORA file from the ORACLE Client from


We are now being shown an error of Not Valid Month (ORA - 01843). This is happening on all Date prompts, even with simple dates that cant be transposed - ‘01/01/2022’

I guess it was already solved - according to so global issue I would guess it might be related to some general NLS language settings defined either in Machine registry or in Oracle client settings.