Before starting SharePoint Manager Plus in your environment, you need to ensure that the port required by the web client to connect to the server is available. By default, the solution uses port number: 8085.
In case you want to change the port number, you can do that by two ways:
<Connectorport = "8085" maxHttpHeaderSize = "8192" maxThreads = "150" minSpareThreads = "25" maxSpareThreads = "75" enableLookups = "false" redirectPort = "8443" acceptCount = "100" connectionTimeout = "20000" disableUploadTimeout = "true" />
or
<!-- A "Connector" represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html (blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8085-->
<Connectorport = "8085" protocol = "HTTP/1.1" connectionTimeout = "20000" redirectPort = "8443"/>
You need to make sure that the PowerShell TCP ports 5985 (HTTP) and 5986 (HTTPS) are opened in the product installed computer to establish proper remote PowerShell communications.
Port 8085 is the default product port number that will be used while you first install the product and it can be changed at any time.
Also, 33315- the product's PostgreSQL (default) port and ES 9300 port should not be blocked on the computer where SharePoint Manager Plus is installed.