Symptom:
Shared local ports or printers disappear, after installing the following updates on devices running the 1903 and 1909 versions of Windows 10.
April 14, 2020—KB4549951 (OS Builds 18362.778 and 18363.778)
https://support.microsoft.com/en-us/help/4549951/windows-10-update-kb4549951
May 12, 2020—KB4556799 (OS Builds 18362.836 and 18363.836)
https://support.microsoft.com/en-us/help/4556799/windows-10-update-kb4556799
Workaround:
1. Identify which ports are disappearing by comparing existing printer ports against ports listed in the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Ports
2. Create a powershell script to re-add the ports
Such as: add-printerport \\10.165.205.197\HPLaserJ
3. Add the script as log-on script or scheduled task to be run after the system boots to restore the ports.
Shared local ports or printers disappear, after installing the following updates on devices running the 1903 and 1909 versions of Windows 10.
April 14, 2020—KB4549951 (OS Builds 18362.778 and 18363.778)
https://support.microsoft.com/en-us/help/4549951/windows-10-update-kb4549951
May 12, 2020—KB4556799 (OS Builds 18362.836 and 18363.836)
https://support.microsoft.com/en-us/help/4556799/windows-10-update-kb4556799
Workaround:
1. Identify which ports are disappearing by comparing existing printer ports against ports listed in the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Ports
2. Create a powershell script to re-add the ports
Such as: add-printerport \\10.165.205.197\HPLaserJ
3. Add the script as log-on script or scheduled task to be run after the system boots to restore the ports.
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