To operate and type, the MYTSOFT.exe has UI privileges (User Interface), and there are various limitations that the operating system puts on this type of software. It has a specific manifest privilege (UIAccess), has to be in \Program Files, has to be digitally code-signed, etc.

This particular error seems to generate from validating the code-signing certificate. Below are several items that could affect running the software and display this error, with the solution that was attempted and resolved the problem listed first.

From the customer experiencing the error: Issue has been solved by installing the correct certificates and root certificates. It took time to figure out the whole certificate chain, but now the application is working. Many thanks for your support.

There were other aspects that were identified that could trigger this error, and listed here for other items to check/verify if the certificate chain is not the issue.

Note: This is from Microsoft direct - "Support for LTSC by apps and tools that are designed for the General Availability Channel release of Windows 10 might be limited."

Check / Enable the Cryptographic service
This is a technical explanation:
"So why do the programs with UI Access require the Cryptographic service? It is because these programs are required to be accessible at any point in the system since they provide functionality to allow people to, well, access the system. Therefore, they would not be of much use if they were unavailable in restricted, elevated-privilege areas such as the login screen or UAC dialog. Because they need to be available everywhere, including restricted areas, they must also be secure to prevent opening an attack vector which can be exploited to take advantage of the restricted areas. To do that, Windows must validate the program by checking its digital signature. To do this, it requires the Cryptographic service."

Privileges - by default, the MYTSOFT.exe is the MYTSOFT.asInvoker.exe privilege. You can also try the MYTSOFT.highestAvailable.exe or MYTSOFT.requireAministrator.exe to see if any difference in error - for details on these differently manifested builds, refer to My-T-Soft Help - Chapter 8 / Files.

Registry items to check/change - RegEdit as Administrator

Get to Key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

(Good idea to export key, or record original value of these 2 items)

Check "ValidateAdminCodeSignatures" and "EnableUIADesktopToggle" - you can toggle these, or ensure they are properly set then test to see if error does not occur

Value: ValidateAdminCodeSignatures
Type: REG_DWORD
Data: This MUST be a value in the following table.
Value:
0x00000000 - Do not enforce cryptographic signatures on interactive applications that require elevation of privilege.
0x00000001 - Enforce cryptographic signatures on any interactive application that requests elevation of privilege.


Value: EnableUIADesktopToggle
Type: REG_DWORD
Data: Enable/disabled - It determines whether UIAccess applications can prompt for elevation without the secure desktop. UIAccess applications are digitally signed.
Value:
0x00000000 - Disabled
0x00000001 - Enabled

Then restart system and test

Notes:

• Depending on product, release version, OS version, and specific technical issue, some tech items are very specific, and some may span to other products/versions
• Downloadable files can also be accessed by anonymous FTP at ftp://downloads.imgpresents.com
• Older files are moved into a separate archive location - see notes/details/new location in *.archived.txt text file

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