The print spooler crashes randomly on the print server causing the print jobs to not print.
Depending on the print data, several HP UPD PCL driver versions, starting with version 6.2.0 (61.185.01.20412) from February 2016 and up to version 6.6.5 (61.220.01.23510) from September 2018, are responsible for causing spooler crashes in a ThinPrint environment.
Applies to product
All ThinPrint products
This behavior is corrected with HP UPD PCL Version 6.7. If you have problems with HP UPD drivers crashing the print server spooler, please update the HP driver to current version 6.7.