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    Expert tip

    Check if you didn't set RequestProperty Content-Type to the wrong type or if you're trying to send the wrong file to the server.

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    401 means "Unauthorized", so there must be something with your credentials. You need to pass the authentication to let the server know its a valid user. Check whether the authentication details are provided.

Solutions on the web

via openmeetings-dev by Susheel Jalali, 1 year ago
Server returned HTTP response code: 503 for URL: https://<Our FQDN>/<Reverse_Proxy_sub-domain>/screenshare/openmeetings-screenshare-3.1.0-SNAPSHOT.jar
via openmeetings-dev by Maxim Solodovnik, 10 months ago
Server returned HTTP response code: 503 for URL: https://<Our FQDN>/<Reverse_Proxy_sub-domain>/screenshare/openmeetings-screenshare-3.1.0-SNAPSHOT.jar
via GitHub by JimDalton
, 1 year ago
Server returned HTTP response code: 500 for URL: http://172.16.4.101:7080/lib/NexOSS_rate_provisioning_tool.jsp
via GitHub by DanyBv
, 1 year ago
Server returned HTTP response code: 403 for URL: https://discordapp.com/api/servers/******************/widget.json
java.io.IOException: Server returned HTTP response code: 503 for URL: https://<Our FQDN>/<Reverse_Proxy_sub-domain>/screenshare/openmeetings-screenshare-3.1.0-SNAPSHOT.jar at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.access$200(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection$9.run(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection$9.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessController.doPrivilegedWithCombiner(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) at com.sun.deploy.net.HttpUtils.followRedirects(Unknown Source) at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source) at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source) at com.sun.deploy.net.BasicHttpRequest.doGetRequest(Unknown Source) at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source) at com.sun.deploy.net.DownloadEngine.downloadResource(Unknown Source) at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source) at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source) at com.sun.javaws.LaunchDownload$DownloadTask.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)