ERR_STRICT_ECH_REQUIRED -37

Net error -37

BROWSER

The request was blocked because ECH is strictly required, but: - The client could not obtain a valid ECH configuration.

Browser error page with a network error code and a checklist of likely causes
Browser network errors: rule out your connection first, then the site.

What it means

ERR_STRICT_ECH_REQUIRED is a Browser error code reported by Google Chrome, Microsoft Edge and other Chromium browsers. Its official message is: “The request was blocked because ECH is strictly required, but: - The client could not obtain a valid ECH configuration.”

How to fix ERR_STRICT_ECH_REQUIRED

  1. Reload the page once — single transient failures heal themselves immediately
  2. Flush DNS: 'ipconfig /flushdns' on Windows, 'dscacheutil -flushcache' on macOS
  3. Disable VPN, proxy settings and your antivirus web shield, then retry
  4. Test the same page from mobile data or another device to isolate YOUR setup from the site
  5. Bypass performance extensions: open a private window, disable ad-blockers and retry

Related errors

ERR_CONNECTION_CLOSEDERR_CONNECTION_RESETERR_CONNECTION_REFUSEDERR_CERT_DATE_INVALIDERR_CERT_AUTHORITY_INVALIDERR_CERT_REVOKEDERR_UNKNOWN_URL_SCHEMEERR_TOO_MANY_REDIRECTS

Source: Chromium net_error_list.h

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