How To Fix a Degraded Search Index Partition in a SharePoint Farm

If you are working with SharePoint 2013, 2016 or 2019, you may encounter an error like the following when you want to search for a keyword on the site.

When you want to check the status of the Search Service Application to diagnose the probem, you can see a screen like the one below. A warning icon on Index Partition!

To understand the problem in more detail you can open up a PowerShell window (used the option “Run As Administrator” to ensure proper permissions) and executed the following commands:

After execution or the command, the result confirmed a problem with the Index Partition. Showing the Index component with the Degraded state.

Solution 1

  1. Reset the Search Index
  2. Perform a Full Crawl on Search Content Source

For resetting the search index, you should go to the Central Administration page. Open up Search Service Application management page and click “Reset Index” link on left hand side. To confirm the Index Reset, click “OK” in the popup message.

And then you should re-index all content sources. For this operation, you should go to the Central Administration Console. Then open Search Service Application Management Page and go to “Content Sources” link. Click any of the content source you already configured earlier, and start full crawl.

Solution 2

You can open up a PowerShell window (used the option “Run As Administrator” to ensure proper permissions) and execute the following commands:

 

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