Exchange Scan Doesn't work

[Mister_Nobody]

We try to scan Exchange 2016 but it doesn't work:

Errorlog:

2023-08-08 10:19:27,799 [177] INFO AssetName:EX1603 AssetUnique:domain\EX1603\1 AssetID:77929 IP:10.x.y.z ScanMethod:Exchange Description:AssetId: 77929 LOGEXCHANGESCANNING DEBUG Scanning for exchange data.
2023-08-08 10:19:27,831 [177] INFO LOGEXCHANGESCANNING DEBUG Connecting using credential 'Server_adm' for target FQDN 'ex1603.domain.loc'.
2023-08-08 10:19:27,833 [177] INFO LOGEXCHANGESCANNING DEBUG Getting connected domain controller for target FQDN 'ex1603.domain.loc'.
2023-08-08 10:19:50,157 [177] INFO LOGEXCHANGESCANNING DEBUG Executing script 'GetConnectedDomainController'.
2023-08-08 10:20:21,736 [177] INFO LOGEXCHANGESCANNING DEBUG Executed script 'GetConnectedDomainController' successfully.
2023-08-08 10:20:21,737 [177] INFO LOGEXCHANGESCANNING DEBUG No domain controller found or task status returned unsuccessful. Trying another script.
2023-08-08 10:20:21,738 [177] INFO LOGEXCHANGESCANNING DEBUG Executing script 'GetConnectedDomainControllerFilterDnsForestNameFirst'.
2023-08-08 10:20:48,809 [177] INFO LOGEXCHANGESCANNING DEBUG Executed script 'GetConnectedDomainControllerFilterDnsForestNameFirst' successfully.
2023-08-08 10:20:48,811 [177] INFO LOGEXCHANGESCANNING DEBUG Domain controller found but task status returned unsuccessful. Last error message: CollectPowerShellClass: The script 1 completed unsuccessfully with errors:
1. System.Management.Automation.RemoteException: You cannot call a method on a null-valued expression..

BUT when I test by Lansweeper.TestTools.App.exe all seems OK:

2023-08-03 08:25:31,465 [1] INFO LOGEXCHANGESCANNING DEBUG Connecting using credential 'Exchange' for target FQDN 'EX1603.domain.loc'.
2023-08-03 08:25:31,526 [1] INFO LOGEXCHANGESCANNING DEBUG Getting the data for target FQDN 'EX1603.domain.loc'.
2023-08-03 08:25:31,565 [1] INFO LOGPOWERSHELLSCANNING DEBUG Remote or Local Runspace: target: EX1603.domain.loc, fqdn: LS.domain.loc name: LS
2023-08-03 08:25:31,566 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:25:31,571 [1] INFO LOGPOWERSHELLSCANNING DEBUG Connect: Attempting to establish a PowerShell connection on EX1603.domain.loc.
2023-08-03 08:25:31,582 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:25:31,582 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:25:31,610 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:25:52,697 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:25:52,698 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:25:52,702 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:25:53,307 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell: Status when connecting to PowerShell on EX1603.domain.loc : Success
2023-08-03 08:25:53,309 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:25:53,315 [1] INFO LOGPOWERSHELLSCANNING DEBUG AddRemoteCredentials: Trying to add the remote credentials and utility class to EX1603.domain.loc.
2023-08-03 08:25:54,119 [1] INFO LOGPOWERSHELLSCANNING DEBUG Invoking the script...
2023-08-03 08:25:54,476 [1] INFO LOGPOWERSHELLSCANNING DEBUG Listing RemoteShell details for target 'EX1603.domain.loc'.
2023-08-03 08:25:54,478 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: ConfirmPreference
2023-08-03 08:25:54,478 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: High
2023-08-03 08:25:54,480 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: DebugPreference
2023-08-03 08:25:54,481 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: SilentlyContinue
2023-08-03 08:25:54,482 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: ErrorActionPreference
2023-08-03 08:25:54,483 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: Continue
2023-08-03 08:25:54,484 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: ProgressPreference
2023-08-03 08:25:54,485 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: Continue
2023-08-03 08:25:54,486 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: VerbosePreference
2023-08-03 08:25:54,487 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: SilentlyContinue
2023-08-03 08:25:54,488 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: WarningPreference
2023-08-03 08:25:54,489 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: Continue
2023-08-03 08:25:54,490 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: InformationPreference
2023-08-03 08:25:54,491 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: SilentlyContinue
2023-08-03 08:25:54,491 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: WhatIfPreference
2023-08-03 08:25:54,492 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: False
2023-08-03 08:25:54,493 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: true
2023-08-03 08:25:54,494 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: AllowRemoteShellAccess
2023-08-03 08:25:54,495 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: 7200000
2023-08-03 08:25:54,496 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: IdleTimeout
2023-08-03 08:25:54,497 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: 2147483647
2023-08-03 08:25:54,498 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: MaxConcurrentUsers
2023-08-03 08:25:54,499 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: 2147483647
2023-08-03 08:25:54,499 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: MaxShellRunTime
2023-08-03 08:25:54,500 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: 2147483647
2023-08-03 08:25:54,501 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: MaxProcessesPerShell
2023-08-03 08:25:54,502 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: 2147483647
2023-08-03 08:25:54,503 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: MaxMemoryPerShellMB
2023-08-03 08:25:54,503 [1] INFO LOGPOWERSHELLSCANNING DEBUG Value: 2147483647
2023-08-03 08:25:54,504 [1] INFO LOGPOWERSHELLSCANNING DEBUG Name: MaxShellsPerUser
2023-08-03 08:25:54,513 [1] INFO LOGPOWERSHELLSCANNING DEBUG Remote or Local Runspace: target: EX1603.domain.loc, fqdn: LS.domain.loc name: LS
2023-08-03 08:25:54,514 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:25:54,514 [1] INFO LOGPOWERSHELLSCANNING DEBUG Connect: Attempting to establish a PowerShell connection on EX1603.domain.loc.
2023-08-03 08:25:54,515 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:25:54,515 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:25:54,517 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:26:15,552 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:26:15,553 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:26:15,557 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:26:16,133 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell: Status when connecting to PowerShell on EX1603.domain.loc : Success
2023-08-03 08:26:16,134 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:26:16,135 [1] INFO LOGPOWERSHELLSCANNING DEBUG AddRemoteCredentials: Trying to add the remote credentials and utility class to EX1603.domain.loc.
2023-08-03 08:26:16,616 [1] INFO LOGPOWERSHELLSCANNING DEBUG Invoking the script...
2023-08-03 08:26:31,225 [1] INFO LOGEXCHANGESCANNING DEBUG Got the data successfully for target FQDN 'EX1603.domain.loc' and script '#GetExchangeServers' - ItemCount: 9
2023-08-03 08:26:31,231 [1] INFO LOGEXCHANGESCANNING DEBUG Parsing Servers.
2023-08-03 08:26:31,255 [1] INFO LOGEXCHANGESCANNING DEBUG Exchange server found for target FQDN 'EX1603.domain.loc'.
2023-08-03 08:26:31,260 [1] INFO LOGPOWERSHELLSCANNING DEBUG Remote or Local Runspace: target: EX1603.domain.loc, fqdn: LS.domain.loc name: LS
2023-08-03 08:26:31,261 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:26:31,261 [1] INFO LOGPOWERSHELLSCANNING DEBUG Connect: Attempting to establish a PowerShell connection on EX1603.domain.loc.
2023-08-03 08:26:31,261 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:26:31,262 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:26:31,264 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:26:52,283 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:26:52,284 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:26:52,286 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:26:52,974 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell: Status when connecting to PowerShell on EX1603.domain.loc : Success
2023-08-03 08:26:52,976 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:26:52,977 [1] INFO LOGPOWERSHELLSCANNING DEBUG AddRemoteCredentials: Trying to add the remote credentials and utility class to EX1603.domain.loc.
2023-08-03 08:26:53,543 [1] INFO LOGPOWERSHELLSCANNING DEBUG Invoking the script...
2023-08-03 08:30:38,071 [1] INFO LOGEXCHANGESCANNING DEBUG Got the data successfully for target FQDN 'EX1603.domain.loc' and script '#GetUsers' - ItemCount: 18061
2023-08-03 08:30:41,536 [1] INFO LOGEXCHANGESCANNING DEBUG Parsing Users.
2023-08-03 08:34:49,783 [1] INFO LOGEXCHANGESCANNING DEBUG 18060 Users found.
2023-08-03 08:34:49,789 [1] INFO LOGPOWERSHELLSCANNING DEBUG Remote or Local Runspace: target: EX1603.domain.loc, fqdn: LS.domain.loc name: LS
2023-08-03 08:34:49,790 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:34:49,791 [1] INFO LOGPOWERSHELLSCANNING DEBUG Connect: Attempting to establish a PowerShell connection on EX1603.domain.loc.
2023-08-03 08:34:49,792 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:34:49,792 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:34:49,795 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:35:10,812 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:35:10,813 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:35:10,816 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:35:11,726 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell: Status when connecting to PowerShell on EX1603.domain.loc : Success
2023-08-03 08:35:11,728 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:35:11,730 [1] INFO LOGPOWERSHELLSCANNING DEBUG AddRemoteCredentials: Trying to add the remote credentials and utility class to EX1603.domain.loc.
2023-08-03 08:35:12,385 [1] INFO LOGPOWERSHELLSCANNING DEBUG Invoking the script...
2023-08-03 08:35:58,560 [1] INFO LOGEXCHANGESCANNING DEBUG Got the data successfully for target FQDN 'EX1603.domain.loc' and script '#GetGroupsUnlimited' - ItemCount: 6884
2023-08-03 08:35:59,147 [1] INFO LOGEXCHANGESCANNING DEBUG Parsing Groups.
2023-08-03 08:36:36,780 [1] INFO LOGEXCHANGESCANNING DEBUG 6883 Groups found.
2023-08-03 08:36:36,788 [1] INFO LOGPOWERSHELLSCANNING DEBUG Remote or Local Runspace: target: EX1603.domain.loc, fqdn: LS.domain.loc name: LS
2023-08-03 08:36:36,793 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:36:36,799 [1] INFO LOGPOWERSHELLSCANNING DEBUG Connect: Attempting to establish a PowerShell connection on EX1603.domain.loc.
2023-08-03 08:36:36,809 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:36:36,814 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:36:36,823 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:36:58,265 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:36:58,278 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:36:58,292 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:36:59,057 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell: Status when connecting to PowerShell on EX1603.domain.loc : Success
2023-08-03 08:36:59,067 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:36:59,068 [1] INFO LOGPOWERSHELLSCANNING DEBUG AddRemoteCredentials: Trying to add the remote credentials and utility class to EX1603.domain.loc.
2023-08-03 08:36:59,582 [1] INFO LOGPOWERSHELLSCANNING DEBUG Invoking the script...
2023-08-03 08:37:54,095 [1] INFO LOGEXCHANGESCANNING DEBUG Got the data successfully for target FQDN 'EX1603.domain.loc' and script '#GetLicensesLicenseUsers' - ItemCount: 20412
2023-08-03 08:37:54,582 [1] INFO LOGEXCHANGESCANNING DEBUG Parsing Licenses.
2023-08-03 08:39:27,278 [1] INFO LOGEXCHANGESCANNING DEBUG 4 Licenses found.
2023-08-03 08:39:27,283 [1] INFO LOGPOWERSHELLSCANNING DEBUG Remote or Local Runspace: target: EX1603.domain.loc, fqdn: LS.domain.loc name: LS
2023-08-03 08:39:27,284 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:39:27,284 [1] INFO LOGPOWERSHELLSCANNING DEBUG Connect: Attempting to establish a PowerShell connection on EX1603.domain.loc.
2023-08-03 08:39:27,285 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:39:27,285 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:39:27,288 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:39:48,310 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 08:39:48,311 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 08:39:48,316 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 08:39:49,100 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell: Status when connecting to PowerShell on EX1603.domain.loc : Success
2023-08-03 08:39:49,102 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 08:39:49,103 [1] INFO LOGPOWERSHELLSCANNING DEBUG AddRemoteCredentials: Trying to add the remote credentials and utility class to EX1603.domain.loc.
2023-08-03 08:39:49,678 [1] INFO LOGPOWERSHELLSCANNING DEBUG Invoking the script...
2023-08-03 10:45:26,655 [1] INFO LOGPOWERSHELLSCANNING DEBUG Remote or Local Runspace: target: EX1603.domain.loc, fqdn: LS.domain.loc name: LS
2023-08-03 10:45:26,656 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 10:45:26,657 [1] INFO LOGPOWERSHELLSCANNING DEBUG Connect: Attempting to establish a PowerShell connection on EX1603.domain.loc.
2023-08-03 10:45:26,658 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 10:45:26,659 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 10:45:26,661 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 10:45:47,675 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Trying to connect to PowerShell on EX1603.domain.loc...
2023-08-03 10:45:47,676 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell Trying to connect to PowerShell on EX1603.domain.loc with user server_adm
2023-08-03 10:45:47,678 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell runspace created, using credentials server_adm
2023-08-03 10:45:48,350 [1] INFO LOGPOWERSHELLSCANNING DEBUG ConnectToPowerShell: Status when connecting to PowerShell on EX1603.domain.loc : Success
2023-08-03 10:45:48,351 [1] INFO LOGPOWERSHELLSCANNING INFORMATIONAL Remote PowerShell session.
2023-08-03 10:45:48,352 [1] INFO LOGPOWERSHELLSCANNING DEBUG AddRemoteCredentials: Trying to add the remote credentials and utility class to EX1603.domain.loc.
2023-08-03 10:45:48,901 [1] INFO LOGPOWERSHELLSCANNING DEBUG Invoking the script...
2023-08-03 10:46:07,303 [1] INFO LOGEXCHANGESCANNING DEBUG Got the data successfully for target FQDN 'EX1603.domain.loc' and script '#GetMobileDevices' - ItemCount: 1948
2023-08-03 10:46:07,584 [1] INFO LOGEXCHANGESCANNING DEBUG Parsing MobileDevices.
2023-08-03 10:46:09,877 [1] INFO LOGEXCHANGESCANNING DEBUG 1947 MobileDevices found.
2023-08-03 10:46:09,880 [1] INFO LOGEXCHANGESCANNING DEBUG Exchange scanned successfully with credential 'server_adm' for target FQDN 'EX1603.domain.loc'.
2023-08-03 10:46:09,881 [1] INFO LOGEXCHANGESCANNING DEBUG Scanning took 8438 seconds for asset FQDN 'EX1603.domain.loc'.

[ErikT]

Hi there,

a quick look on the log file shows that there is an issue with retrieving your domain controllers 

2023-08-08 10:20:48,811 [177] INFO LOGEXCHANGESCANNING DEBUG Domain controller found but task status returned unsuccessful. Last error message: CollectPowerShellClass: The script 1 completed unsuccessfully with errors:
1. System.Management.Automation.RemoteException: You cannot call a method on a null-valued expression..

The domain controller the exchange server is connected to must also meet the remote PS requirements.

The below sample PowerShell commands can be run on your DC to configure them.

Save the commands in a .ps1 file and execute this PowerShell script as an administrator on the DC. For added security, you can replace the "*" in the script with the IP address of your Lansweeper scanning server. Even more restrictive certificate setups can be created, which is best discussed with your network or security admin.

## Starts the WinRM service
Start-Service -Name "WinRM"
## Enables remote PowerShell
Enable-PSRemoting -Force
## Sets up a certificate and WSMan listener
$Cert = New-SelfSignedCertificate -CertstoreLocation Cert:\LocalMachine\My -DnsName "LsClusterScanning"
New-Item -Path WSMan:\LocalHost\Listener -Transport HTTPS -Address * -CertificateThumbPrint $Cert.Thumbprint ?Force
## Optional step, for added security, which removes every HTTP listener from WSMan
# Get-ChildItem WSMan:\Localhost\listener | Where -Property Keys -eq "Transport=HTTP" | Remove-Item -Recurse
## Allows traffic over port 5986 in Windows Firewall
New-NetFirewallRule -DisplayName "Windows Remote Management (HTTPS-In)" -Name "Windows Remote Management (HTTPS-In)" -Profile Any -LocalPort 5986 -Protocol TCP