diff --git a/pkg/rancher-desktop/components/UpdateStatus.vue b/pkg/rancher-desktop/components/UpdateStatus.vue
index d4967856621..5ca2f2f811f 100644
--- a/pkg/rancher-desktop/components/UpdateStatus.vue
+++ b/pkg/rancher-desktop/components/UpdateStatus.vue
@@ -36,16 +36,15 @@
         <span v-else></span>
       </template>
     </card>
-    <card v-else-if="unsupportedUpgradeAvailable" ref="osUpdateRequired" :show-highlight-border="false">
+    <card v-else-if="unsupportedUpgradeAvailable" :show-highlight-border="false">
       <template #title>
         <div class="type-title">
-          <h3>Operating System Upgrade Required</h3>
+          <h3>Latest Version Not Supported</h3>
         </div>
       </template>
       <template #body>
         <p>
-          A newer version of Rancher Desktop is available, but not supported on the current version
-          of your operating system. Please upgrade your operating system to run it.
+          A newer version of Rancher Desktop is available, but not supported on your system.
         </p>
         <br>
         <p>
@@ -53,7 +52,9 @@
           <a href="https://docs.rancherdesktop.io/getting-started/installation">the installation documentation</a>.
         </p>
       </template>
-      <template #actions><div></div></template>
+      <template #actions>
+        <div></div>
+      </template>
     </card>
   </div>
 </template>
diff --git a/pkg/rancher-desktop/components/__tests__/UpdateStatus.spec.ts b/pkg/rancher-desktop/components/__tests__/UpdateStatus.spec.ts
index 8e897cb59e8..ee573c1f047 100644
--- a/pkg/rancher-desktop/components/__tests__/UpdateStatus.spec.ts
+++ b/pkg/rancher-desktop/components/__tests__/UpdateStatus.spec.ts
@@ -98,12 +98,12 @@ describe('UpdateStatus.vue', () => {
           available:  true,
           downloaded: false,
           info:       {
-            version: 'v1.2.3',
-            files: [],
-            path: '',
-            sha512: '',
-            releaseDate: '',
-            nextUpdateTime: 12345,
+            version:                     'v1.2.3',
+            files:                       [],
+            path:                        '',
+            sha512:                      '',
+            releaseDate:                 '',
+            nextUpdateTime:              12345,
             unsupportedUpgradeAvailable: false,
           },
           progress: {
diff --git a/pkg/rancher-desktop/main/update/LonghornProvider.ts b/pkg/rancher-desktop/main/update/LonghornProvider.ts
index 7a0b66ea557..e066c4d3fc5 100644
--- a/pkg/rancher-desktop/main/update/LonghornProvider.ts
+++ b/pkg/rancher-desktop/main/update/LonghornProvider.ts
@@ -71,18 +71,26 @@ export interface LonghornUpdateInfo extends UpdateInfo {
  * responder service.
  */
 interface LonghornUpgraderResponse {
-  versions: {
-    Name: string;
-    ReleaseDate: Date;
-    Supported: boolean | undefined;
-    Tags: string[];
-  }[];
+  versions: UpgradeResponderVersion[];
   /**
    * The number of minutes before the next upgrade check should be performed.
    */
   requestIntervalInMinutes: number;
 }
 
+type UpgradeResponderVersion = {
+    Name: string;
+    ReleaseDate: Date;
+    Supported?: boolean;
+    Tags: string[];
+};
+
+type UpgradeResponderQueryResult = {
+  latest: UpgradeResponderVersion;
+  requestIntervalInMinutes: number,
+  unsupportedUpgradeAvailable: boolean,
+};
+
 export interface GithubReleaseAsset {
   url: string;
 
@@ -199,9 +207,7 @@ export async function setHasQueuedUpdate(isQueued: boolean): Promise<void> {
 }
 
 async function getPlatformVersion(): Promise<string> {
-  const platform = os.platform();
-
-  switch (platform) {
+  switch (process.platform) {
   case 'win32':
     return os.release();
   case 'darwin': {
@@ -219,7 +225,58 @@ async function getPlatformVersion(): Promise<string> {
     // should suffice.
     return 'unknown';
   }
-  throw new Error(`Platform "${ platform }" is not supported`);
+  throw new Error(`Platform "${ process.platform }" is not supported`);
+}
+
+/**
+ * Fetch info on available versions of Rancher Desktop, as well as other
+ * things, from the Upgrade Responder server.
+ */
+export async function queryUpgradeResponder(url: string, currentVersion: semver.SemVer): Promise<UpgradeResponderQueryResult> {
+  const requestPayload = {
+    appVersion: currentVersion,
+    extraInfo:  {
+      platform:        `${ process.platform }-${ os.arch() }`,
+      platformVersion: await getPlatformVersion(),
+    },
+  };
+  // If we are using anything on `github.io` as the update server, we're
+  // trying to run a simplified test.  In that case, break the protocol and do
+  // a HTTP GET instead of the HTTP POST with data we should do for actual
+  // longhorn upgrade-responder servers.
+  const requestOptions = /^https?:\/\/[^/]+\.github\.io\//.test(url) ? { method: 'GET' } : {
+    method: 'POST',
+    body:   JSON.stringify(requestPayload),
+  };
+
+  console.debug(`Checking for upgrades from ${ url }`);
+  const responseRaw = await fetch(url, requestOptions);
+  const response = await responseRaw.json() as LonghornUpgraderResponse;
+
+  console.debug(`Upgrade server response:`, util.inspect(response, true, null));
+
+  const allVersions = response.versions;
+
+  // If the upgrade responder does not send the Supported field,
+  // assume that the version is supported.
+  for (const version of allVersions) {
+    version.Supported ??= true;
+  }
+
+  allVersions.sort((version1, version2) => semver.rcompare(version1.Name, version2.Name));
+  const supportedVersions = allVersions.filter(version => version.Supported);
+
+  if (supportedVersions.length === 0) {
+    throw newError('Could not find latest version', 'ERR_UPDATER_LATEST_VERSION_NOT_FOUND');
+  }
+  const latest = supportedVersions[0];
+  const unsupportedUpgradeAvailable = allVersions[0].Name !== latest.Name;
+
+  return {
+    latest,
+    requestIntervalInMinutes: response.requestIntervalInMinutes,
+    unsupportedUpgradeAvailable,
+  };
 }
 
 /**
@@ -257,43 +314,6 @@ export default class LonghornProvider extends Provider<LonghornUpdateInfo> {
     return buffer.toString('base64');
   }
 
-  /**
-   * Fetch info on available versions of Rancher Desktop from the Upgrade
-   * Responder server.
-   * @returns Array of available versions.
-   */
-  async fetchUpgraderResponse(): Promise<LonghornUpgraderResponse> {
-    const requestPayload = {
-      appVersion: this.updater.currentVersion.format(),
-      extraInfo:  {
-        platform:        `${ os.platform() }-${ os.arch() }`,
-        platformVersion: await getPlatformVersion(),
-      },
-    };
-    // If we are using anything on `github.io` as the update server, we're
-    // trying to run a simplified test.  In that case, break the protocol and do
-    // a HTTP GET instead of the HTTP POST with data we should do for actual
-    // longhorn upgrade-responder servers.
-    const requestOptions = /^https?:\/\/[^/]+\.github\.io\//.test(this.configuration.upgradeServer) ? { method: 'GET' } : {
-      method: 'POST',
-      body:   JSON.stringify(requestPayload),
-    };
-
-    console.debug(`Checking for upgrades from ${ this.configuration.upgradeServer }`);
-    const responseRaw = await fetch(this.configuration.upgradeServer, requestOptions);
-    const response = await responseRaw.json() as LonghornUpgraderResponse;
-
-    console.debug(`Upgrade server response:`, util.inspect(response, true, null));
-
-    // If the upgrade responder does not send the Supported field,
-    // assume that the version is supported.
-    for (const version of response.versions) {
-      version.Supported = version.Supported ?? true;
-    }
-
-    return response;
-  }
-
   /**
    * Check for updates, possibly returning the cached information if it is still
    * applicable.
@@ -313,19 +333,9 @@ export default class LonghornProvider extends Provider<LonghornUpdateInfo> {
       }
     }
 
-    const response = await this.fetchUpgraderResponse();
-    const allVersions = response.versions;
-
-    allVersions.sort((version1, version2) => semver.rcompare(version1.Name, version2.Name));
-    const supportedVersions = allVersions.filter(version => version.Supported);
-
-    if (supportedVersions.length === 0) {
-      throw newError('Could not find latest version', 'ERR_UPDATER_LATEST_VERSION_NOT_FOUND');
-    }
-    const latest = supportedVersions[0];
-    const unsupportedUpgradeAvailable = allVersions[0].Name !== latest.Name;
-
-    const requestIntervalInMinutes = response.requestIntervalInMinutes || defaultUpdateIntervalInMinutes;
+    const queryResult = await queryUpgradeResponder(this.configuration.upgradeServer, this.updater.currentVersion);
+    const { latest, unsupportedUpgradeAvailable } = queryResult;
+    const requestIntervalInMinutes = queryResult.requestIntervalInMinutes || defaultUpdateIntervalInMinutes;
     const requestIntervalInMs = requestIntervalInMinutes * 1000 * 60;
     const nextRequestTime = Date.now() + requestIntervalInMs;
 
diff --git a/pkg/rancher-desktop/main/update/__tests__/LonghornProvider.spec.ts b/pkg/rancher-desktop/main/update/__tests__/LonghornProvider.spec.ts
new file mode 100644
index 00000000000..2fc66cd06a8
--- /dev/null
+++ b/pkg/rancher-desktop/main/update/__tests__/LonghornProvider.spec.ts
@@ -0,0 +1,109 @@
+import semver from 'semver';
+
+import { queryUpgradeResponder } from '../LonghornProvider';
+
+import fetch from '@pkg/utils/fetch';
+
+jest.mock('@pkg/utils/fetch', () => {
+  return {
+    __esModule: true,
+    default:    jest.fn(),
+  };
+});
+
+describe('queryUpgradeResponder', () => {
+  it('should return the latest version', async() => {
+    (fetch as jest.Mock).mockReturnValueOnce({
+      json: () => Promise.resolve({
+        requestIntervalInMinutes: 100,
+        versions:                 [
+          {
+            Name:        'v1.2.3',
+            ReleaseDate: 'testreleasedate',
+            Supported:   true,
+            Tags:        [],
+          },
+          {
+            Name:        'v3.2.1',
+            ReleaseDate: 'testreleasedate',
+            Supported:   true,
+            Tags:        [],
+          },
+          {
+            Name:        'v2.1.3',
+            ReleaseDate: 'testreleasedate',
+            Supported:   true,
+            Tags:        [],
+          },
+        ],
+      }),
+    });
+    const result = await queryUpgradeResponder('testurl', new semver.SemVer('v1.2.3'));
+
+    expect(result.latest.Name).toEqual('v3.2.1');
+  });
+
+  it('should set unsupportedUpgradeAvailable to true when a newer-than-latest version is unsupported', async() => {
+    (fetch as jest.Mock).mockReturnValueOnce({
+      json: () => Promise.resolve({
+        requestIntervalInMinutes: 100,
+        versions:                 [
+          {
+            Name:        'v1.2.3',
+            ReleaseDate: 'testreleasedate',
+            Supported:   true,
+            Tags:        [],
+          },
+          {
+            Name:        'v3.2.1',
+            ReleaseDate: 'testreleasedate',
+            Supported:   false,
+            Tags:        [],
+          },
+          {
+            Name:        'v2.1.3',
+            ReleaseDate: 'testreleasedate',
+            Supported:   true,
+            Tags:        [],
+          },
+        ],
+      }),
+    });
+    const result = await queryUpgradeResponder('testurl', new semver.SemVer('v1.2.3'));
+
+    expect(result.unsupportedUpgradeAvailable).toBe(true);
+    expect(result.latest.Name).toEqual('v2.1.3');
+  });
+
+  it('should set unsupportedUpgradeAvailable to false when no newer-than-latest versions are unsupported', async() => {
+    (fetch as jest.Mock).mockReturnValueOnce({
+      json: () => Promise.resolve({
+        requestIntervalInMinutes: 100,
+        versions:                 [
+          {
+            Name:        'v1.2.3',
+            ReleaseDate: 'testreleasedate',
+            Supported:   true,
+            Tags:        [],
+          },
+          {
+            Name:        'v3.2.1',
+            ReleaseDate: 'testreleasedate',
+            Supported:   true,
+            Tags:        [],
+          },
+          {
+            Name:        'v2.1.3',
+            ReleaseDate: 'testreleasedate',
+            Supported:   false,
+            Tags:        [],
+          },
+        ],
+      }),
+    });
+    const result = await queryUpgradeResponder('testurl', new semver.SemVer('v1.2.3'));
+
+    expect(result.unsupportedUpgradeAvailable).toBe(false);
+    expect(result.latest.Name).toEqual('v3.2.1');
+  });
+});
diff --git a/pkg/rancher-desktop/main/update/index.ts b/pkg/rancher-desktop/main/update/index.ts
index a69777aa011..af0645de175 100644
--- a/pkg/rancher-desktop/main/update/index.ts
+++ b/pkg/rancher-desktop/main/update/index.ts
@@ -166,7 +166,7 @@ async function getUpdater(): Promise<AppUpdater | undefined> {
   });
   updater.on('update-downloaded', (info) => {
     if (!isLonghornUpdateInfo(info)) {
-      throw new Error('updater: event update-not-available: info is not of type LonghornUpdateInfo');
+      throw new Error('updater: event update-downloaded: info is not of type LonghornUpdateInfo');
     }
     if (state === State.DOWNLOADING) {
       state = State.UPDATE_PENDING;
diff --git a/pkg/rancher-desktop/utils/osVersion.ts b/pkg/rancher-desktop/utils/osVersion.ts
index e37f2d32612..c62bf8bf4f1 100644
--- a/pkg/rancher-desktop/utils/osVersion.ts
+++ b/pkg/rancher-desktop/utils/osVersion.ts
@@ -5,7 +5,7 @@ import { Log } from '@pkg/utils/logging';
 
 export async function getMacOsVersion(console: Log): Promise<semver.SemVer | null> {
   const { stdout } = await spawnFile('/usr/bin/sw_vers', ['-productVersion'], { stdio: ['ignore', 'pipe', console] });
-  const currentVersion = semver.coerce(stdout.trim());
+  const currentVersion = semver.coerce(stdout);
 
   return currentVersion;
 }