SearchProtocolHost.exe is part of the Windows Indexing Service, an application that indexes files on the local drive making them easier to search. This is a crucial part of the Windows operating system and should not be disabled or removed.

Can I disable Microsoft Windows Search protocol host?

To stop this prompt, open Control Panel > Mail (Microsoft Outlook 2016) (32-bit), select the older mail profile that matches the account listed in the Search Protocol Host credential dialog window, and click Remove, then click OK.

What is Microsoft Windows Search protocol host Windows 10?

The SearchProtocolHost.exe is the process name for the Windows Search Indexer. It helps keep a record of all files on the system to make the search process better. The cause behind the SearchProtocolHost.exe process causing high CPU usage is when the Indexer is unable to find certain files on the system.