Redirect loop (too many redirects)

What it usually means

The URL kept redirecting until the limit was reached. Usually a rule pointing back at itself — check for an http/https or www/non-www loop.

What to check first

• An http-to-https rule and an https-to-http rule that point at each other (often a proxy "force SSL" setting plus an application setting).
• A www / non-www rule that redirects both ways.
• A redirect to a login page that itself redirects back.

How ErrorDetector reports it

This is a reachability failure. The check is repeated immediately to rule out a blip; once confirmed, an incident opens with this cause on it, every channel on the monitor is alerted, and the outage counts against uptime until the next successful check closes the incident.

Caught by: httpkeywordapi monitors. Read about the incident management feature.