Citrix states in their article: CTX416440

CTX416440 - Suppress Spooler Error Messages

This document was published at: http://support.citrix.com/kb/entry.jspa?externalID=CTX416440

Document ID: CTX416440, Created on: Jul 28, 2000, Updated: Apr 23, 2003

Products: Citrix MetaFrame 1.8 for Microsoft NT 4.0 Server Terminal Server Edition, Citrix MetaFrame 1.8 for Microsoft Windows 2000, Citrix WinFrame 1.8

Sometimes the spooler service will refuse to restart after a shutdown, giving a 'System Error 12'. Most likely cause - unanswered printer error popup on the console of the server. Disabling these error messages can make the restart more reliable.

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServices Spooler

Change the value of ErrorControl from 0 (which lets all error messages display) to 1 (to suppress system error messages only) or 2 (to suppress both system error and application error messages). Values are in Hex.