If you have installed Windows update KB4338418 you will see a licence expiry message on the Knowledgelake Imaging View or Search webparts.



We have found that the following Microsoft .NET Framework Updates for .NET 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 will cause a licensing issue within KnowledgeLake Imaging :

.NET Framework updates for Windows Server 2012 : KB 4338419
.NET Framework updates for Windows Server 2012 R2 : KB 4338418


The error message you will receive is noted below :

==: An error occurred trying to load the license file à System.TypeInitializationException: The type initializer for ‘Microsoft.Licensing.SLMRuntime’ threw an exception. à System.UnauthorizedAccessException: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))



You can check if these are applied to your server by opening the command prompt and entering :
systeminfo

This command lists all system information and KB's that are applied on your server.


Removing the applicable updates noted above using the add remove programs page in the control panel and rebooting your Imaging Server will resolve this issue when it is encountered.


This also can be present in the following updates:


https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8202 


To resolve this please follow the resolution steps int his article


https://support.microsoft.com/en-us/help/4345913/access-denied-errors-after-installing-july-2018-security-rollup-update