Cloudflare / Cloudflare

proxy.ts middleware does not execute in production when deployed behind Cloudflare Proxy

Developer deploying Next.js on Vercel behind Cloudflare finds proxy.ts middleware silently skipped in production, breaking API proxy and security header functionality Includes evidence for Cloudflare troubleshooting demand.

Source-backed Last updated May 22, 2026 1 source Needs local verification

Category: Cloudflare
Error signature: proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path
Quick fix: Check the build output, project root, and deployment platform configuration before redeploying.
Updated: May 22, 2026
Verification status: Source-backed
Evidence: 1 public source URL

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for Cloudflare, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path is a Cloudflare failure pattern reported for developers trying to developer deploying next.js on vercel behind cloudflare finds proxy.ts middleware silently skipped in production, breaking api proxy and security header functionality. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

GitHub vercel/next.js#86122 opened Nov 14 2025 by shivaluma. 58 comments, labeled Bug + Runtime. Intersects Cloudflare CDN/proxy with Next.js edge runtime. Category mapping: Cloudflare listed as approved category; error involves Cloudflare interaction. Persistent community issue (still open, high engagement). Commercial value: cloud proxy misconfiguration can expose APIs or break auth flows.

Common causes

GitHub vercel/next.js#86122 opened Nov 14 2025 by shivaluma. 58 comments, labeled Bug + Runtime. Intersects Cloudflare CDN/proxy with Next.js edge runtime. Category mapping: Cloudflare listed as approved category; error involves Cloudflare interaction. Persistent community issue (still open, high engagement). Commercial value: cloud proxy misconfiguration can expose APIs or break auth flows.

Quick fixes

Confirm the exact error signature matches proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path.
Check the Cloudflare account, local tool state, and provider configuration involved in the failing workflow.
Check the build output, project root, and deployment platform configuration before redeploying.

Platform/tool-specific checks

Verify the command, editor, extension, or API client that produced the error.
Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

Capture the exact error message and the command, editor action, or request that triggered it.
Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
Review the source evidence below and compare it with your environment.
Apply one change at a time and rerun the smallest failing action.
Keep the working fix documented for the team or deployment environment.

How to prevent it

Keep provider/tool configuration documented.
Record non-secret diagnostics such as tool version, provider name, model name, and command path.
Add a lightweight check before CI or production workflows depend on the tool.

Diagnostic flow for this page

Match proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path exactly before applying the quick fix.
Compare the failing environment with Cloudflare versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path mean in Cloudflare?

proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path indicates the workflow described by "proxy.ts middleware does not execute in production when deployed behind Cloudflare Proxy" failed in a Cloudflare context. Start by confirming the exact signature and the component that emitted it.

What should I check first for proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path?

Check whether this cause matches your environment: GitHub vercel/next.js#86122 opened Nov 14 2025 by shivaluma. 58 comments, labeled Bug + Runtime. Intersects Cloudflare CDN/proxy with Next.js edge runtime. Category mapping: Cloudflare listed as approved category; error involves Cloudflare interaction. Persistent community issue (still open, high engagement). Commercial value: cloud proxy misconfiguration can expose APIs or break auth flows.

Is the proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path guidance source-backed?

The "proxy.ts middleware does not execute in production when deployed behind Cloudflare Proxy" page is labeled source-backed. It has 1 public source URL from github.com, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path?

For "proxy.ts middleware does not execute in production when deployed behind Cloudflare Proxy", avoid applying "Check the build output, project root, and deployment platform configuration before redeploying." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging proxy.ts does not execute in production when behind Cloudflare Proxy; middleware.ts works but proxy.ts bypassed entirely when Cloudflare is in the path?

For "proxy.ts middleware does not execute in production when deployed behind Cloudflare Proxy", collect the failing Cloudflare command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.