Search Crawl stuck in "Crawl Completing" state

Hello Gulsan Kemberley

Thank you for reaching out to Microsoft Q&A.

I notice that the request is timed out, can you please double check if the connection to port is working. Test-NetConnection (NetTCPIP) | Microsoft Learn

Test-NetConnection -ComputerName <> -Port <>

You can also check Content Processing and Index components are still functioning.

Get-SPEnterpriseSearchServiceApplication | Get-SPEnterpriseSearchStatus -Text

This retrieves a list of information about all search components of the default Search Service Application. Get-SPEnterpriseSearchStatus (Microsoft.SharePoint.Powershell) | Microsoft Learn

Look for the components and check their status.

Additionally, you can try these steps:

Pause crawling

$ssa = Get-SPEnterpriseSearchServiceApplication 
Suspend-SPEnterpriseSearchServiceApplication $ssa 

Restart Search services:

Restart-Service OSearch16 
Restart-Service SPSearchHostController 

Clone an active topology: This avoids a full rebuild.

$ssa = Get-SPEnterpriseSearchServiceApplication 
$active = Get-SPEnterpriseSearchTopology -SearchApplication $ssa -Active 
$clone = New-SPEnterpriseSearchTopology -SearchApplication $ssa -Clone -SearchTopology $active 
Set-SPEnterpriseSearchTopology -Identity $clone 

Wait until Get-SPEnterpriseSearchStatus shows all components = Active.

Then resume crawling:

Resume-SPEnterpriseSearchServiceApplication $ssa 

I also see that there is new CU, you can consider update to the latest version.

SharePoint updates - Office release notes | Microsoft Learn

I look forward for your reply.

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