Hello Jayaram666
This behavior is by design and is intended to prevent unauthorized access to network resources.
When you map a network drive, Windows typically uses the credentials of the currently logged-in user to establish the connection. Allowing multiple sets of credentials for a single mapped drive could lead to security risks. For example, if one set of credentials grants read-only access and another set grants read-write access, it could create confusion and potentially lead to unauthorized access.
In this case, you can use the IP address of the remote server when you try to connect to the network share.
Reference article: Cannot use different credentials for a network share - Windows Server | Microsoft Learn
Below is my test result:
Kind regards,
Karlie