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Bug
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Resolution: Unresolved
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Minor
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None
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Jenkins 1.502
Job Poll Action Plugin 1.0
Windows Server 2008 R2
When I click the Poll SCM link for a job it brings up a window complaining about not using a HTTP POST. The message is below.
You must use POST method to trigger builds. (From scripts you may instead pass a per-project authentication token, or authenticate with your API token.) If you see this page, it may be because a plugin offered a GET link; file a bug report for that plugin.
Workaround: Click the proceed button on the new web page and it will poll properly. You then have to return to the Job via the breadcrumbs.
[JENKINS-17076] Poll SCM brings up a window complaining about submitting a POST
Kevin Phillips
added a comment - I am encountering this error as well.
I could be mistaken, but I think this feature was working at one point on our Jenkins configuration so I suspect this error may be indirectly related to some recent configuration changes that we've made. For example, we just recently enabled the "Project-based Matrix Authorization Strategy" in the security configuration area so maybe this has somehow affected the behavior of the polling mechanism.
Kevin Phillips
added a comment - I am encountering this error as well.
I could be mistaken, but I think this feature was working at one point on our Jenkins configuration so I suspect this error may be indirectly related to some recent configuration changes that we've made. For example, we just recently enabled the "Project-based Matrix Authorization Strategy" in the security configuration area so maybe this has somehow affected the behavior of the polling mechanism. 
M Chon
added a comment - I am also seeing it.
"You must use POST method to trigger builds. (From scripts you may instead pass a per-project authentication token, or authenticate with your API token.) If you see this page, it may be because a plugin offered a GET link; file a bug report for that plugin."
Then I click on the 'Proceed' button and nothing happens.
M Chon
added a comment - I am also seeing it.
"You must use POST method to trigger builds. (From scripts you may instead pass a per-project authentication token, or authenticate with your API token.) If you see this page, it may be because a plugin offered a GET link; file a bug report for that plugin."
Then I click on the 'Proceed' button and nothing happens. 
Update bug based on issue submission guidelines (change priority) and add Workaround.