Microsoft Teams Report extracting owner email address

Himanshu Singh, You can check for the PSsession status before you get the owners every iteration. 

$PSSessionStatus = $(Get-PSSession -Name $Session.Name ).State 

If($PSSessionStatus -eq Opened)

 {

  Run the code to obtain de owners

 }

Else

 {

 #Create a new session and run the code to obtain the owners

}

As an alternative, you can create a counter that increments every time you iterate inside the loop and every N number of iterations you close and reopen the PSsession (Refreshing it). 

Also to reduce loading times I will recommend only import the cmdlets that you are using. 

Import-PSSession $Session -AllowClobber -Verbose -CommandName "Get-UnifiedGroupLinks"

Regards

Erick A. Moreno