Microsoft had previously broken printing for some printers in their March 10th 2021 Update KB5000802 for Windows 10.  Also affects Windows 7 and Server OSes, see further down.

This could have affected SpecView as either trend chart plot areas not printing, or SpecView crashing completely.

Microsoft have now released a fix for this on March 18th, it’s called KB5001649 and it should be installed next time you run Windows Update, but if not, here is how to check:

  • Open your computer’s Settings page (Control Panel)
  • In the search bar type ‘Update’ and select ‘Windows Update settings’
  • Select ‘View update history’ to see if you have update KB5001649 installed already
  • If not, go back and ‘Check for Updates’
  • You should then see the ‘Optional quality update available’ and the KB5001649 update
  • Select ‘Download and install’ and follow the on-screen instructions

Full Microsoft details are here:

-------------------------- Windows 7 ------------------------------------
See an article here (but it is full of adverts):

However, it says:
The out-of-band updates are already available for manual download from the Microsoft Update Catalog.
Here is the list of special updates for the different Windows versions:
KB5001639 for Windows 7 SP1 and Windows Server 2008 R2: Microsoft Update Catalog
And you can go directly to Microsoft's website here:

-------------------------- Windows Server 2012 ---------------------------
We've also been informed of a similar issue in Windows Server 2012 in updates numbered: KB5000848 and KB5000800.
And similarly Microsoft have issued a fix in update numbered: KB5001640


SCADA software for people with other jobs!