Reset Search Index in SharePoint 2013 using Powershell

Add-PSSnapin Microsoft.SharePoint.PowerShell –ErrorAction SilentlyContinue

 

#Get Search service application

$ssa = Get-SPEnterpriseSearchServiceApplication

 

#Content Source Name

$ContentSourceName = "SPSite"

 

#Get the content source

$ContentSource = Get-SPEnterpriseSearchCrawlContentSource -Identity $ContentSourceName -SearchApplication $SSA

 

#Get Each Start Address

$StartAddresses = $ContentSource.StartAddresses | ForEach-Object { $_.OriginalString }

 

#Clear Indexed content starts with custom contnet source

$ContentSource.StartAddresses.Clear()

 

#Re-add the start address to content source

ForEach ($Address in $StartAddresses ){ $ContentSource.StartAddresses.Add($Address) }