Symptoms

Attempting to update a plugin using the Universal Plugin Manager in JIRA (via the Manage Add-On functionality), results in an error message similar to the following:

"The system attempted to connect to http://xxx.xxxx.xxx/rest/plugins/1.0/pending/f087d359-7220-405b-ae6c-7cedeefdb55d to retrieve the status of your operation, but failed. This can indicate a problem with the base URL configuration of your instance. Try refreshing the page to see if the operation completed, and see UPM documentation for more details about this error."

The following appears in the atlassian-jira.log:

2014-09-30 11:22:08,481 http-bio-8080-exec-5 ERROR tela 682x282x3 1pdxbmh 192.100.10.00,100.100.10.100 /plugins/servlet/gadgets/dashboard-diagnostics [dashboard.internal.diagnostics.DiagnosticsServlet] DIAGNOSTICS: FAILED
com.atlassian.gadgets.dashboard.internal.diagnostics.UrlSchemeMismatchException: Detected URL scheme, 'http', does not match expected scheme 'https'
	at com.atlassian.gadgets.dashboard.internal.diagnostics.Diagnostics.checkExpectedScheme(Diagnostics.java:64)
	at com.atlassian.gadgets.dashboard.internal.diagnostics.Diagnostics.check(Diagnostics.java:36)
	at com.atlassian.gadgets.dashboard.internal.diagnostics.DiagnosticsServlet.executeDiagnostics(DiagnosticsServlet.java:97)

Cause

The server.xml used is not configured properly to use a proxy.

Resolution

• open <JIRA Installation>/conf/server.xml in a text editor.

• make sure that the proxyName and proxyPort are configured with the hostname and port of your reverse proxy (please refer the example below):