Partial "Index Reset" (per ContentSource or StartAddress)

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This script will remove and re-add your content source's start addresses.

SharePoint will more or less rebuild the index for these sources, when a full crawl is started.

 

 

$sourceName = "Local SharePoint sites"

 

$SSA = Get-SPEnterpriseSearchServiceApplication

$source = Get-SPEnterpriseSearchCrawlContentSource -Identity $sourceName -SearchApplication $SSA

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

$source.StartAddresses.Clear()

ForEach ($address in $startaddresses ){ $source.StartAddresses.Add($address) }