Installing Claude Code on Windows in 2026: The Native Installer Walkthrough That Actually Works

If you have spent any time in the Claude Code subreddit or the GitHub issues tracker in the last six months, you have seen the same Windows install problem cycle through every week. Someone runs the install command, the installer prints “successfully installed,” and then claude --version returns “is not recognized as the name of a cmdlet.” Then come the suggestions: switch to Git Bash, switch to WSL2, reinstall Node, blow away npm. Half of them are wrong for the current installer. This guide is the one I wish existed when I set up Claude Code on a fresh Windows 11 machine this month.

What changed in 2026: the native installer is now the default

Anthropic shipped a native installer in 2025 that removed the Node.js dependency entirely. As of May 2026 it is the recommended path on every platform, and npm install of @anthropic-ai/claude-code is still supported but is no longer the primary method Anthropic tests and updates. The native installer downloads a single binary, drops it in ~/.local/bin, registers it on your PATH, and auto-updates in the background.

What this means in practice on Windows: you do not need Node, you do not need npm, and you do not need WSL2 unless you specifically want a Linux toolchain. PowerShell on Windows 10 or 11 (64-bit) is enough.

The two commands that actually work

Open Windows PowerShell — not the x86 version, not Git Bash, not Command Prompt. The x86 entry runs as a 32-bit process and will fail on a 64-bit machine. Git Bash does not support the TTY features Claude Code’s interactive CLI needs, so you will hit the “Raw mode is not supported” error before you finish authenticating.

Then run:

irm https://claude.ai/install.ps1 | iex

That is the entire install. irm is Invoke-RestMethod, iex is Invoke-Expression, and the script handles the binary download, PATH update, and shell hooks. When it finishes, close the terminal and open a new PowerShell window. This is the step everyone skips. The PATH change applies to new shells only — your current session still has the old PATH and will not find the binary.

In the new window:

claude --version

You should see a version string. Then run claude with no arguments from any project directory. The CLI opens your default browser, asks you to sign in to your Anthropic account, and authorizes the local install. Setup, end to end, is under five minutes on a clean machine.

You need a paid account — the free tier does not include Claude Code

This catches new users every week. The free Claude.ai plan gets you chat on web, iOS, Android, and desktop. It does not get you Claude Code. To use the terminal CLI you need one of:

A Pro subscription at $20 per month (or $17 per month billed annually). A Max 5x subscription at $100 per month. A Max 20x subscription at $200 per month. A Team Premium seat at $100 per seat per month annual or $125 monthly, minimum five seats. Or API credits — new API accounts get a small free credit pool to test with, but you are billed per token from there.

Pro and Max draw from the same token budget as your regular Claude chat usage. The Pro window is roughly 44,000 tokens per five-hour rolling window, which third-party tracking puts at 10 to 40 prompts depending on codebase complexity. Max 5x and 20x scale that linearly. If you are evaluating whether to upgrade, the Pro window will tell you within a week — you either hit the cap during real work or you do not.

The five errors you will hit, and what fixes them

“claude is not recognized as the name of a cmdlet.” Your PATH was not updated, or you did not open a new terminal. First, close PowerShell and reopen. If the error persists, the install location exists but your user PATH does not reference it. Run this in PowerShell:

$currentPath = [Environment]::GetEnvironmentVariable('PATH', 'User')
[Environment]::SetEnvironmentVariable('PATH', "$currentPath;$env:USERPROFILE\.local\bin", 'User')

Close the terminal again, open a new one, and claude --version should work.

“Raw mode is not supported.” You are running Claude Code inside Git Bash. Git Bash does not provide the TTY interface the CLI needs. Switch to Windows PowerShell. Everything you would do in Git Bash you can do in PowerShell; you just need to use Windows path syntax inside the prompt.

Microsoft Store popup interrupts installation. A popup saying “Get an app to open this ‘claude’ link” sometimes appears during the install on Windows 11. This is a known issue tracked in Anthropic’s GitHub. Dismiss the popup, then re-run the install command. If it persists, install Git for Windows first — the installer registers a couple of URL handlers that resolve the popup.

Duplicate npm and native installs. If you previously installed via npm and later ran the native installer, you have two binaries on PATH. The native one wins on some shells and the npm one wins on others, which produces confusing version mismatches. Remove the npm install:

npm uninstall -g @anthropic-ai/claude-code

Then verify with where.exe claude in PowerShell. Only one path should come back.

“Invalid code” during OAuth. The browser-based login generates a one-time code that you paste back into the terminal. The code expires fast and is sensitive to copy-paste truncation. Press Enter to retry, complete the browser flow, and paste the code immediately — do not let it sit in your clipboard while you check email.

What to do in the first session

Once claude --version returns and the OAuth flow completes, run claude from inside a real project directory — not a fresh empty folder. Claude Code reads context from the surrounding repo, and the first thing it does in a useful session is index files and look for a .clauderules or CLAUDE.md. If you start in an empty directory the first interaction feels useless because there is nothing to ground the model on.

If you want to lock to a specific model rather than the default, the current strings as of May 2026 are claude-opus-4-7 for the flagship, claude-sonnet-4-6 for the workhorse, and claude-haiku-4-5-20251001 for the fast tier. Sonnet 4.6 is what you want for almost all coding work — it is 30 to 50 percent faster than Sonnet 4.5 and ships with a 1M context window. Reserve Opus 4.7 for the hardest agentic refactors; it eats tokens noticeably faster.

The setup is not the hard part

Most of the Windows pain in the Claude Code ecosystem comes from people following install guides written for the npm-era CLI, then layering troubleshooting from the WSL2-era guides on top of that, then asking why nothing works. The current path is one PowerShell command, a new terminal, and a browser login. If you hit one of the five errors above, the fix is short. If you hit something else, the troubleshooting docs at code.claude.com cover it — most novel issues turn out to be PATH or shell-choice problems in a slightly different costume.

The next thing to figure out is not installation. It is whether your Pro window survives a real week of work, and whether your team needs Premium seats. That math is what determines the actual cost of Claude Code on Windows — not whether the binary runs.