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ArcGIS Server 10.3 Upgrade Join Machine Issue

Question asked by igor92128 on May 6, 2015
Latest reply on May 6, 2015 by KOGuinn-esristaff



I had a 2 server cluster running in ArcGIS Server 10.2.2 and I upgraded to 10.3. I noticed that the one server that got successfully upgraded is in the cluster, but after I upgraded the second server and attempted it rejoin in to the cluster, I got the following error:


Failed to join the site 'http://server01:6080/arcgis/admin'. Server machine 'http://server01:6080/arcgis/admin/machines/register' returned an error. 'A JSONObject text must begin with '{' at character 0 of '


Does anyone know how to get around this or has seen this before?