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<div class="h9">Exception Message:</div>
<pre><code>dotnet ef migrations add [MigrationName]
Could not execute because the specified command or file was not found.
Possible reasons for this include:
  * You misspelled a built-in dotnet command.
  * You intended to execute a .NET program, but dotnet-ef does not exist.
  * You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.
</code></pre>
<div class="image-outer"><img src="https://www.learnentityframeworkcore.com/images/efcore/migrations/add-migration/troubleshooting-dotnet-command-not-found.png" loading="lazy" alt="Exception - dotnet command not found"></div>
<div class="h9">Cause:</div>
<p>This error arises when the <code>dotnet-ef</code> tool is not installed globally or locally when using .NET Command Line Interface (.NET CLI).</p>
<div class="h9">Solution:</div>
<p>Install the <code>dotnet-ef</code> tool:</p>
<pre><code class="language-cmd">// for the latest version:
dotnet tool install --global dotnet-ef

// for a specific version:
dotnet tool install --global dotnet-ef --version 8.*
dotnet tool install --global dotnet-ef --version 7.*
dotnet tool install --global dotnet-ef --version 6.*
dotnet tool install --global dotnet-ef --version 5.*
dotnet tool install --global dotnet-ef --version 3.*
</code></pre>

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