Sometimes when trying to re-enable a disabled job jenkins fails with
HTTP 403 "No valid crumb was included in the request"
- is related to
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JENKINS-12875 "No valid crumb was included in the request" errors all around
-
- Resolved
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Cannot reproduce on Jenkins 1.567 except when clicking the button before the page has fully loaded (and runs the JavaScript that inserts the crumb into the form). If that's the problem, don't do that.