Discovery Error on Windows Machine with Powershell 1.0 - Support and Troubleshooting

Discovery Error on Windows Machine with Powershell 1.0 Issue Discovery on a Windows target device throw -

Error: Missing expression after unary operator '-'.At line:1 char:2+ -E

Release All Cause Powershell version on Target Machine or the MID Server Host Machine is Version 1.0 Resolution There are two ways to resolve this issue:

Avoid Using Powershell by MID Server

Use MID Server Property 'mid.use_powershell' This property enables or disables PowerShell for Discovery. Default value: false When set to true, Discovery reverts to using WMIRunner Probe. This probe cannot use the credentials defined in Discovery > Credentials. In this case, the MID Server connects to the WMI providers with the account the MID Server service is running. This account is required to have access to the remote machines so that WMIRunner works.

Upgrade Powershell Version

Upgrade Powershell Version on the Target Machine/Host Machine. Related Links ServiceNow supports these PowerShell versions :

Version 2.0

Regular Discovery

Version 3.0

Regular Discovery Application Dependency Mapping (ADM) File-based Discovery PowerShell version 3.0 does not support Windows Server 2003.

Version 4.0

Regular Discovery Application Dependency Mapping (ADM) File-based Discovery

Version 5.0

Regular Discovery Application Dependency Mapping (ADM) File-based Discovery

Useful documents :

MID Server parameters for PowerShell Add a MID Server parameter PowerShell for Discovery