Windows 11 Enterprise Evaluation 26H2: Offline Installation and Local Account Support

A completely offline, local-account-only first boot cannot currently be treated as an officially supported deployment path for Windows 11 Enterprise Evaluation 26H2 because its Evaluation Center conditions explicitly require Microsoft-account sign-in and activation after installation.^1^

What is supported and what remains unconfirmed

Microsoft documents both of these general Enterprise deployment capabilities:

• UserAccounts\LocalAccounts\LocalAccount creates a local account during the oobeSystem pass and can add it to the local Administrators group.^2^
• HideOnlineAccountScreens=true hides the OOBE sign-in page and is described as primarily intended for enterprises that do not want employees using email addresses as user names.^3^

For example, the documented settings have this form:

<UserAccounts>
  <LocalAccounts>
    <LocalAccount wcm:action="add">
      <Name>LabAdmin</Name>
      <DisplayName>Lab Administrator</DisplayName>
      <Group>Administrators</Group>
      <Password>
        <Value>REPLACE_WITH_SECURE_VALUE</Value>
        <PlainText>true</PlainText>
      </Password>
    </LocalAccount>
  </LocalAccounts>
</UserAccounts>
<OOBE>
  <HideOnlineAccountScreens>true</HideOnlineAccountScreens>
</OOBE>

However, those are general Windows Setup settings. The available documentation does not specifically state that they override the Microsoft-account condition attached to Enterprise Evaluation 26H2. The Evaluation Center currently says:

• register and install the software for a 90-day evaluation;
• activation is required after installation, although no product key is required;
• using this evaluation requires signing in with a Microsoft account;
• failure to activate, or expiration, causes a black desktop, a persistent notification, and hourly shutdowns.^1^

Consequently, the account requirement cannot safely be classified as applying only to interactive OOBE. Microsoft’s general Unattend documentation does not provide a 26H2 Evaluation-specific exception.

Supported deployment approach

For an evaluation that must remain within the explicitly published conditions:

1. Create the Generation 2 VM with Secure Boot and virtual TPM 2.0 enabled. Windows 11 requires UEFI/Secure Boot capability and TPM 2.0.^4^
2. Attach the official Enterprise Evaluation 26H2 ISO.
3. Provide temporary controlled connectivity for the documented Microsoft-account sign-in and activation.
4. Verify Settings → System → Activation before isolating the VM.
5. Disconnect the virtual NIC and use the VM only for the 90-day evaluation.
6. Delete or rebuild it when the evaluation expires rather than attempting to convert or extend the evaluation.

If network access is prohibited even temporarily, obtain written confirmation from Microsoft licensing/support that the particular 26H2 Evaluation image can be activated through an offline process. Microsoft documents offline activation generally, but the supplied 26H2 Evaluation instructions do not establish that this keyless evaluation image supports it. Do not assume that the Product Activation Portal’s perpetual-license workflow applies to Evaluation media.

Evaluation use and release-specific requirements

The stated compatibility and build-qualification use fits the Evaluation Center’s described purpose: the software is intended for IT professionals evaluating Windows 11 Enterprise on behalf of an organization and is offered as a 90-day evaluation.^1^ That supports temporary internal testing, not production use or continued use after expiration.

Version 26H2 reached general availability on September 29, 2026; its Enterprise servicing end date is October 9, 2029.^5^ That servicing lifecycle does not extend the Evaluation edition’s 90-day limit.

Also note:

• Use UserAccounts and individual OOBE settings; Microsoft explicitly warns not to use SkipMachineOOBE to automate OOBE.^6^
• HideLocalAccountScreen is not the relevant client setting; Microsoft documents it as applying only to Windows Server editions.^7^
• An answer file named Autounattend.xml can be placed at the root of removable media, where Windows Setup discovers and caches it.^8^
• Do not use KMS generic keys or normal Enterprise subscription activation instructions for the Evaluation image; those are different activation channels.

References

1. Windows 11 Enterprise | Microsoft Evaluation Center
2. LocalAccount (microsoft-windows-shell-setup-useraccounts-localaccounts-localaccount)
3. HideOnlineAccountScreens
4. Windows 11 System Requirements | Microsoft Support
5. Windows 11 release information
6. Automate OOBE
7. HideLocalAccountScreen
8. Windows Setup Automation Overview