Save UNC Credentials

We often have EXEs from an UNC Path of a Server which is part of an Active Directory. The user itself has rights to access the Path with the EXE, but the created Temp-Admin does not have these rights. It would be nice to save Credentials for a Specific generic Active-Directory User which can be used in the Elevated User Session to gain access to the originally opened file from an UNC-Path. In the actual way the Elevation Prompt is automatically closed but then the user gets directly asked to enter another set of credentials - which should be his own, but they do not get it.

I even tried this article, but the option did not work...

https://learn.microsoft.com/en-us/troubleshoot/windows-client/networking/mapped-drives-not-available-from-elevated-command