The Microsoft security updates for Windows 7, Windows 8.1 and all supported versions of Windows 10 for August 2019 have an issue that breaks Visual Basic applications, macros and scripts.

The updates that cause the issue are:

• Windows 7 and Windows Server 2008/2008 R2 – KB4512486
  https://support.microsoft.com/en-us/help/4512486/windows-7-update-kb4512486
• Windows 8.1 and Windows Server 2012/2012 R2 – KB4512489
  https://support.microsoft.com/en-us/help/4512489/windows-8-1-update-kb4512489
• Windows 10 May 2019 edition 1903
  https://support.microsoft.com/en-us/help/4512508
• Windows 10 October 2018 edition 1809 and Windows Server 2019
  https://support.microsoft.com/en-us/help/4511553
• Windows 10 April 2018 edition 1803
  https://support.microsoft.com/en-us/help/4512501
• Windows 10 October 2017 edition 1709
  https://support.microsoft.com/en-us/help/4512516
• Windows 10 April 2017 edition 1703
  https://support.microsoft.com/en-us/help/4512507
• Windows 10 July 2016 edition 1607 and Windows Server 2016
  https://support.microsoft.com/en-us/help/4512517

Fixes for the August 13, 2019 updates:

• Windows 7 and Windows Server 2008/2008 R2
  Available from Windows Update – NO
  https://support.microsoft.com/en-us/help/4517297/windows-7-update-kb4517297
  Symantec and Norton antivirus issues with August update – https://support.symantec.com/us/en/article.tech255857.html
• Windows 8.1 and Windows Server 2012/2012 R2
  Available from Windows Update – NO
  https://support.microsoft.com/en-us/help/4517298/windows-8-1-update-kb4517298
• Windows 10 May 2019 edition 1903
  Available from Windows Update – YES
  https://support.microsoft.com/en-us/help/4512941
• Windows 10 October 2018 edition 1809 and Windows Server 2019
  Available from Windows Update – YES
  https://support.microsoft.com/en-us/help/4512534
• Windows 10 April 2018 edition 1803
  Available from Windows Update – YES
  https://support.microsoft.com/en-us/help/4512509
• Windows 10 October 2017 edition 1709
  Available from Windows Update – YES
  https://support.microsoft.com/en-us/help/4512494
• Windows 10 April 2017 edition 1703
  Available from Windows Update – YES
  https://support.microsoft.com/en-us/help/4512474
• Windows 10 July 2016 edition 1607 and Windows Server 2016
  Available from Windows Update – YES
  https://support.microsoft.com/en-us/help/4512495