Windows Remote Desktop Credentials not working

[pineco0314]

I've been testing Morpheus VM Essentials recently, but I'm currently facing the following issue.

After creating an instance with Windows Server 2022, I tried to log in to it via Remote Desktop from another external Windows Server.
The system prompts for credentials, and when I enter the correct user information, I get the message:
"Your credentials did not work."
Even though the credentials are correct, I’m unable to log in.

Is there anyone who might know what could be causing this issue?

[Manuel Boosch]

1. Check user rights

• Log on locally to the server.

• Run secpol.msc → Local Policies → User Rights Assignment:

  • Allow log on through Remote Desktop Services → your user (or the Remote Desktop Users group) must be listed.

  • Deny log on locally / Deny log on through Remote Desktop Services → your user must not be listed here.

---

2. Verify group membership

• Run compmgmt.msc → Local Users and Groups → Groups.

• Make sure your user is a member of Remote Desktop Users (or Administrators).

---

3. Test username format

In the RDP client, try different formats for the username:

• DOMAIN\username (if the server is domain-joined)

• .\username (for local accounts)

• username (sometimes works for local accounts too)

---

4. Check NLA (Network Level Authentication)

• On the server:

  • Run SystemPropertiesRemote.exe.

  • Under Remote Desktop, uncheck: “Allow connections only from computers running Remote Desktop with Network Level Authentication (recommended)”.

• Try logging in again.

---

5. Clear saved credentials

• On the client: Open Credential Manager → remove any saved RDP credentials for that server → reconnect and enter fresh credentials.

---

6. Update the RDP client

• Make sure you’re connecting from a recent Windows 10/11 or an up-to-date mstsc.exe.

• If the client is old, it may fail against Windows Server 2022.

• Test with:

  mstsc /admin

  (sometimes bypasses certain restrictions).

---

7. Check recent Windows security updates

• Starting with updates like KB5014754, Windows tightened credential handling.

• If you see this issue after a recent update, check Group Policy:

  • gpedit.msc → Computer Configuration → Administrative Templates → System → Credentials Delegation

  • Ensure “Restrict delegation of credentials to remote servers” policies aren’t blocking you.

[pineco0314]

Thank you for sharing the troubleshooting points.
I tried all of them, but couldn't identify the root cause, and the issue remains unresolved.
This is my first time trying VM Essentials—are others able to connect via RDP from external networks without encountering this kind of issue?