https://community.hpe.com/t5/operating-system-microsoft/pcl-xl-error/m-p/2417193#M205 did a restore and compare of winnt directory from before having this problem <BR />HPDCMON.dll was different. This is used for language monitor. Technet says <BR />this can cause high spooler utilization anyway. Deleted from registry and <BR />restarted spooler, error all gone. Fri, 14 Apr 2000 09:44:05 GMT Mark Frac 2000-04-14T09:44:05Z https://community.hpe.com/t5/operating-system-microsoft/pcl-xl-error/m-p/2417191#M203 NT 4.0 Workstation SP4<BR />HP Laserjet 8000 Driver version 4.01<BR /><BR />Some users when they print from Excel receive the error PCL XL error <BR />IllegalStreamHeader.<BR /><BR />Any ideas, thanks<BR />Michel Tue, 04 Jan 2000 09:26:34 GMT https://community.hpe.com/t5/operating-system-microsoft/pcl-xl-error/m-p/2417191#M203 Michel Jourdevant 2000-01-04T09:26:34Z https://community.hpe.com/t5/operating-system-microsoft/pcl-xl-error/m-p/2417192#M204 Michel,<BR /><BR />Try changing the Page Protect option on the printer. Also, try using the <BR />latest drivers.<BR /><BR />Regards,<BR /><BR />Gerard Laygui Tue, 11 Jan 2000 16:40:45 GMT https://community.hpe.com/t5/operating-system-microsoft/pcl-xl-error/m-p/2417192#M204 Gerard Laygui 2000-01-11T16:40:45Z https://community.hpe.com/t5/operating-system-microsoft/pcl-xl-error/m-p/2417193#M205 did a restore and compare of winnt directory from before having this problem <BR />HPDCMON.dll was different. This is used for language monitor. Technet says <BR />this can cause high spooler utilization anyway. Deleted from registry and <BR />restarted spooler, error all gone. Fri, 14 Apr 2000 09:44:05 GMT https://community.hpe.com/t5/operating-system-microsoft/pcl-xl-error/m-p/2417193#M205 Mark Frac 2000-04-14T09:44:05Z