How to Fix Vercel We Encountered an Internal Error During Deployment (Deploying Outputs Fix)

If your Vercel deployment fails with the error “We encountered an internal error. Please try again.”, the problem usually happens during the Deploying outputs phase after the build finishes successfully. This error looks confusing because your code builds correctly, but Vercel stops before publishing the deployment.

This guide explains the exact causes of this error and shows step-by-step solutions that actually fix it.

Why Vercel Shows “We Encountered an Internal Error”

This error appears when Vercel fails during the final deployment step. In most cases, the problem is not your code. The issue usually comes from region failures, invalid build output, project configuration errors, or temporary platform problems.

Common causes include:

• Region outage on Vercel servers
• Missing output directory after build
• Corrupted project link (.vercel folder issue)
• Invalid vercel.json configuration
• Platform-side deployment incident
• Function region mismatch
• Build settings conflict

You should check each of these one by one.

Fix 1 — Change Vercel Function Region

This is the most common fix. Many deployments fail because the selected region has an outage.

Steps

1. Open Vercel Dashboard
2. Select your project
3. Go to Settings → Functions
4. Find Serverless Function Region
5. Change region to one of these:
   • sfo1 (San Francisco)
   • fra1 (Frankfurt)
   • iad1 (Washington)
6. Click Save
7. Redeploy the project

If the error came from a region outage, the deployment will succeed after switching.

Fix 2 — Delete .vercel Folder and Relink Project

Sometimes the project configuration becomes corrupted. Removing the local Vercel link fixes this.

macOS / Linux

rm -rf .vercel
vercel

Windows

rmdir /s /q .vercel
vercel

After running the command, redeploy the project.

Fix 3 — Check Build Output Directory

Vercel fails if the build does not generate the correct output folder.

Make sure your framework outputs files correctly.

Common output folders

Example package.json:

{
  "scripts": {
    "build": "next build"
  }
}

If the output folder is missing, Vercel cannot deploy.

Fix 4 — Check vercel.json Configuration Errors

Incorrect routing or build settings can break deployment.

Common mistakes:

• Using both vercel.json and now.json
• Using routes with rewrites together
• Invalid function paths
• Wrong destination pattern

Example wrong config:

{
  "routes": [],
  "rewrites": []
}

Use only one routing method.

Remove old config files if needed.

Fix 5 — Remove Conflicting Settings in Project

If you changed settings manually, Vercel may ignore them.

Check:

• Build & Development Settings
• Root directory
• Output directory
• Framework preset

If something looks wrong, reset to default.

Then redeploy.

Fix 6 — Force New Deployment

Sometimes Vercel keeps using a broken deployment cache.

Force a new deploy.

vercel --force

Or push empty commit:

git commit --allow-empty -m "redeploy"
git push

This triggers a fresh deployment.

Fix 7 — Wait and Retry (Platform Incident)

If the build finishes but deployment fails, the problem may be on Vercel’s side.

Signs of platform issue:

• Build completes successfully
• Error happens at “Deploying outputs”
• Multiple deployments fail
• Other users report same error

In this case:

• Wait 10–30 minutes
• Redeploy again
• Try different region

Vercel usually fixes internal errors quickly.

Fix 8 — Check Environment Variables

Invalid environment variables can break deployment.

Check:

• Deleted tokens
• Wrong API keys
• Old Edge Config connection string
• Missing variables

Update or remove invalid values, then redeploy.

Fix 9 — Check Git Repository Connection

Vercel cannot deploy if repo access breaks.

Check:

• GitHub / GitLab still connected
• Repo not deleted
• App permissions not removed
• Correct account logged in

Reconnect repository if needed.

The “We encountered an internal error” message in Vercel usually happens during the final deployment step, not during the build. In most cases, the fix is simple. Changing the region, fixing the output folder, or relinking the project solves the problem.

If the error continues, the cause is often a temporary Vercel platform issue, and redeploying after a few minutes usually works.

Always check region, build output, configuration files, and project settings before assuming your code is broken.