<p>I am running a Spring Boot application utilizing Azure Kubernetes Service. I found this strange error in my pod logs recently.</p>
<blockquote>
<p>com.azure.identity.CredentialUnavailableException: EnvironmentCredential authentication unavailable. Environment variables are not fully configured.To mitigate this issue, please refer to the troubleshooting guidelines here at <a href="https://aka.ms/azsdk/java/identity/environmentcredential/troubleshoot" rel="nofollow noreferrer">https://aka.ms/azsdk/java/identity/environmentcredential/troubleshoot</a>
ManagedIdentityCredential authentication unavailable. Connection to IMDS endpoint cannot be established.
SharedTokenCacheCredential authentication unavailable. No accounts were found in the cache.
IntelliJ Authentication not available. Please log in with Azure Tools for IntelliJ plugin in the IDE.
Failed to read Vs Code credentials from Linux Key Ring.
AzureCliCredential authentication unavailable. Azure CLI not installed.To mitigate this issue, please refer to the troubleshooting guidelines here at <a href="https://aka.ms/azsdk/java/identity/azclicredential/troubleshoot" rel="nofollow noreferrer">https://aka.ms/azsdk/java/identity/azclicredential/troubleshoot</a>
Unable to execute PowerShell. Please make sure that it is installed in your systemTo mitigate this issue, please refer to the troubleshooting guidelines here at <a href="https://aka.ms/azure-identity-java-default-azure-credential-troubleshoot" rel="nofollow noreferrer">https://aka.ms/azure-identity-java-default-azure-credential-troubleshoot</a></p>
</blockquote>
<p>Any hints are much appreciated !</p>
<p>My trails so far:</p>
<ol>
<li>Upgrade/Downgrade Kubernetes versions</li>
<li>Checking Environment Variable Assignments</li>
</ol>

codeX
<p><strong>Could you please validate that you are setting the following environment variables?</strong></p>
<ol>
<li><strong>ENVIRONMENT_VARIABLES</strong>
ensure that the variables <strong>azure_client, azure_tenant and azure_client_secret</strong> are properly set.</li>
</ol>
<p>Below steps will work when authenticate using <strong>environment variables</strong>:
Please add the following variables in env_path,</p>
<pre><code>export AZURE_CLIENT_ID=XXXXXXXXXXXXXX
export AZURE_TENANT_ID=XXXXXXXXXXXXX
export AZURE_CLIENT_SECRET=XXXXXXXX
</code></pre>
<p>Check your environment variables with</p>
<pre><code>System.getenv(&quot;AZURE_CLIENT_ID&quot;)
</code></pre>
<ol start="2">
<li><strong>MANAGEDIDENTITY_CREDENTIALS</strong></li>
</ol>
<p>Managed Identity is currently unsupported by the Java, we can use an <em><strong>secret</strong></em> or a <em><strong>certificate</strong></em> authentication
for Sample:</p>
<pre><code>export AZURE_CLIENT_ID=XXXXXXXXXXXXXX
export AZURE_TENANT_ID=XXXXXXXXXXXXX
export AZURE_CLIENT_CERTIFICATE_PATH=XXXXXXXXXXXX
</code></pre>
<ol start="3">
<li>In <strong>VS</strong>,  go to <em>Tools</em> &gt; <em>Options</em>&gt;<em>Azure Service Authentication</em> &gt; <em>Account Selection</em>&gt; <em>Sign_in</em> with your credentials</li>
</ol>
<p><a href="https://i.stack.imgur.com/jDMdl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jDMdl.png" alt="enter image description here" /></a></p>
<p>If you see the &quot;<em>Re-enter your credentials</em> link, click it and sign in again.
if not  <em>sign_out</em> and <em>sign_in</em> again.</p>
<ol start="4">
<li><strong>PROFILE_ENV_APPLICATION</strong>
Please check the profile environment for the application</li>
</ol>
<p><code>windir\System32\inetsrv\config\applicationHost.config</code></p>
<p>In <em>application.config</em> file if  it <em>setProfileEnvironment</em> is <em><strong>false</strong></em>, change it to <em><strong>True</strong></em>.</p>
<p>If not, add it under &lt;<em>applicationPoolDefaults</em>&gt; tag  like below.</p>
<pre><code>&lt;applicationPoolDefaults managedRuntimeVersion=&quot;vXX&quot;&gt;
&lt;processModel identityType=&quot;ApplicationPoolIdentity&quot; loadUserProfile=&quot;true&quot; setProfileEnvironment=&quot;true&quot;&gt;
</code></pre>

<ol start="5">
<li><strong>SHARED_TOKEN_CASHE_CREDENTIAL</strong></li>
</ol>
<p>for shared token cache credentials we have to add the below command</p>
<pre><code>DefaultAzureCredential(connection_verify=False, exclude_shared_token_cache_credential=True
</code></pre>
<ol start="6">
<li><p><strong>AZURE_CLI_CREDENTIAL</strong> AND  <strong>AZURE_CLI</strong>
in <em><strong>environment variable</strong></em> add your <em>PATH</em>
run the terminal
echo $PATH</p>
</li>
<li><p><strong>POWERSHELL</strong></p>
</li>
</ol>
<p>open the PowerShell and run as a administrator,
run the command to fix the disk and display a status report</p>
<pre><code>Chkdsk c: /F 
</code></pre>
<p>after this command You will have to restart the computer to work the PowerShell.</p>
