Printing issues with large batches after applying Microsoft updates March 2021

We have confirmed that recent (March 2021) Microsoft Windows updates for Windows 10 & Windows 1903/1909 Server releases have created issues related to print jobs out of many applications including the printing of checks with Mekorma Payment Hub.
In several cases we have seen the first in a batch of many checks will print correctly and then others will print with missing sections, e.g. MICR line, signatures, etc. Our engineering team is investigating. If you are running into this issue and have recently applied the following updates, please un-install them from control panel of the client's Microsoft Windows machine. We will post more information as we discover.

KB5000802 for Windows 10 2004/20H2 & Windows Server 2004/20H2
KB5000808 for Windows 10 1909 & Windows Server 1909
​KB5000822 for Windows 10 1809 & Windows Server 2019
KB5000809 for Windows 10 1803 & Windows Server 1803

Alternatively, Microsoft has stated KB5001638 is known to resolve the issue associated with the aforementioned updates. To-date we have not received confirmation.

Microsoft has also recommended the following install provided at the following link. Resolved issues in Windows 10, version 20H2 and Windows Server, version 20H2

Resolved issues in Windows 10, version 20H2 and Windows Server, version 20H2 | Microsoft Docs

Find the version of Windows in question and expand it. Then select Resolved issues.

Find the “Unexpected results when printing from some apps or to some printers” issue in the list of resolved issues, and click on the link to the Resolved KB.

This will take you to a page which outlines what Windows version was released to fix the black box issue and printing issues (should all show March 18th as the release date):

This update is not installing through the automatic Windows Update installer correctly, so you will want to install using the Microsoft Update Catalog, which is linked on the page.
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This will take you to the final page in the process, with a list of various installs. Find the one that matches your environment (i.e., 32 or 64bit), and click the download button the right.