DeviceProfileSample results in a 404 not found

[cveld]

The DeviceProfileSample sample results in a 404 not found. What am I doing wrong?

When I use the following I get results using the same identity for retrieving an access token through a device code:

az login --use-device-code
az rest --method get --url "https://dev.azure.com/myorgname/_apis/projects?api-version=2.2" --resource 499b84ac-1321-427f-aa17-267ca6975798

App registration manifest:

{
	"id": "someguid-a89c-430f-8179-024b9be5cd1f",
	"acceptMappedClaims": null,
	"accessTokenAcceptedVersion": null,
	"addIns": [],
	"allowPublicClient": true,
	"appId": "someguid-d10b-46d5-908f-60b0bb4b3e66",
	"appRoles": [],
	"oauth2AllowUrlPathMatching": false,
	"createdDateTime": "2021-11-28T15:51:11Z",
	"certification": null,
	"disabledByMicrosoftStatus": null,
	"groupMembershipClaims": null,
	"identifierUris": [],
	"informationalUrls": {
		"termsOfService": null,
		"support": null,
		"privacy": null,
		"marketing": null
	},
	"keyCredentials": [],
	"knownClientApplications": [],
	"logoUrl": null,
	"logoutUrl": null,
	"name": "PAT API Test App",
	"oauth2AllowIdTokenImplicitFlow": false,
	"oauth2AllowImplicitFlow": false,
	"oauth2Permissions": [],
	"oauth2RequirePostResponse": false,
	"optionalClaims": null,
	"orgRestrictions": [],
	"parentalControlSettings": {
		"countriesBlockedForMinors": [],
		"legalAgeGroupRule": "Allow"
	},
	"passwordCredentials": [],
	"preAuthorizedApplications": [],
	"publisherDomain": "mytenant.onmicrosoft.com",
	"replyUrlsWithType": [],
	"requiredResourceAccess": [
		{
			"resourceAppId": "499b84ac-1321-427f-aa17-267ca6975798",
			"resourceAccess": [
				{
					"id": "ee69721e-6c3a-468f-a9ec-302d16a4c599",
					"type": "Scope"
				}
			]
		},
		{
			"resourceAppId": "00000003-0000-0000-c000-000000000000",
			"resourceAccess": [
				{
					"id": "e1fe6dd8-ba31-4d61-89e7-88639da4683d",
					"type": "Scope"
				}
			]
		}
	],
	"samlMetadataUrl": null,
	"signInUrl": null,
	"signInAudience": "AzureADMyOrg",
	"tags": [],
	"tokenEncryptionKeyId": null
}