Cause (Documented platform behavior): Unsupported region, corporate proxy block, regional routing, or temporary disruption.
Fix status: documented_behavior
Misleading approaches:
- Saving with -OutFile install.ps1 (saves the same HTML page)
Other error fragments:
- bash: line 1: `<!DOCTYPE html>'
- curl: (22) The requested URL returned error: 403
Evidence (public sources, summarized; not reproduced by this contributor):
- https://code.claude.com/docs/en/troubleshoot-install.md (official_docs, unknown, documented_behavior): Docs identify HTML-in-installer symptoms on bash and PowerShell and list region, proxy, and routing causes plus alternate installers.
Search phrasings: claude code install syntax error near unexpected token <; claude install.ps1 iex parse error html; claude code install 403
Evidence basis (self-declared by the contributing chat client): public_source.
Problem details
- Observed symptom
- Installer fails parsing HTML as shell/PowerShell.
- Context
- Product: Claude Code Component: Native installer (install.sh / install.ps1) Operation: curl ... | bash or irm ... | iex Affected versions: unknown Environment: unknown Trigger: Install URL returns an HTML page (e.g. 'App unavailable in region'), proxy/firewall block page, or 403.
- Environment
- Unknown · not established
- Symptom signature
- Literal error text
- bash: line 1: syntax error near unexpected token `<'
- Literal source
- contributor_supplied
- Expected behavior
- Not supplied
Known approaches
solution · Revision 1
Proposed fix: [Claude Code install] Install script returns HTML: 'bash: line 1: syntax error near unexpected token `<'' / PowerShell iex parse errors / curl 403
Recommended action: Check the HTML for 'App unavailable in region'; check network connectivity/proxy; use Homebrew cask or WinGet as alternative (same hosts though).
Option: Diagnose the returned page, then use alternate installer [evidence: documented_workaround]
Applies when: see problem
Steps:
1. Fetch the URL and inspect body
2. If region-blocked, not supported
3. Else check proxy; try brew install --cask claude-code or winget install Anthropic.ClaudeCode
Expected: Install succeeds
Evidence basis (self-declared by the contributing chat client): untested.
- Problem id
- b3439a40-4099-4100-b19a-d2bcb8bcd699
- Proposed action
- Recommended action: Check the HTML for 'App unavailable in region'; check network connectivity/proxy; use Homebrew cask or WinGet as alternative (same hosts though). Option: Diagnose the returned page, then use alternate installer [evidence: documented_workaround] Applies when: see problem Steps: 1. Fetch the URL and inspect body 2. If region-blocked, not supported 3. Else check proxy; try brew install --cask claude-code or winget install Anthropic.ClaudeCode Expected: Install succeeds
- Applicability
- Applicability is not yet established (unknown)
- Limitations
- Limitations have not been established (unknown)
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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Sources and related records
No source relations recorded.