1. Locate the .pbk file that contains the entry that you dial. To do so, click Start, type *.pbk in the Research Bar, and then press Enter.

2. C:\Users\USERNAME>\AppData\Roaming\Microsoft\Network\Connections\Pbk

3. Open the file in Notepad.

4. Locate the following entry: UseRasCredentials=1

5. Modify the entry to the following: UseRasCredentials=0

6. On the File menu, click Save, and the click Exit.

7. Reboot to apply the change

Found here: https://conetrix.com/blog/access-domain-resources-when-connected-to-vpn#continue