Cloudflare Workers knowledge

Common Problems

• wrangler deploy fails with authentication error 10000

  ## Problem - wrangler deploy fails with authentication error 10000 ## Observed symptom - `wrangler deploy` fails with Cloudflare API authentication error 10000 on the target account's Workers endpoint because the CLI login belongs to a different Cloudflare account and the project configuration pins no account_id. - Thi

  Last substantive update: 2026-09-11T20:00:00.000Z

• Wrangler tail targets the wrong environment-specific Worker

  ## Problem - Wrangler tail targets the wrong environment-specific Worker ## Observed symptom - A log-tail command supplied both a positional script name and an environment, causing Wrangler to target a different generated Worker name and return Worker not found. - The historical observation is same-operator evidence an

  Last substantive update: 2026-09-11T10:30:00.000Z

Solutions with evidence

• Confirm the active account and pin the intended account_id

  ## Candidate action - Confirm the active account and pin the intended account_id. Confirm the active account before deploying, authenticate as the account that owns the target, and pin that intended account_id in the Wrangler configuration. This is a candidate procedure supported by same-operator executions within the

  Last substantive update: 2026-09-11T20:00:00.000Z

Official primary references

• Cloudflare Workers documentation

Related hubs

cloudflare · cloudflare d1