Windows 10 Microsoft Windows Search Filter Host/Search Protocol Host have high CPU usage even after indexing has completed

  • Thread starter Thread starter Samuel Bar 11
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Samuel Bar 11


Hi, I had just installed Windows 10 Enterprise 1607 (build 14393.105) on my computer, and I noticed that the fans were always running. Looking into task manager and I found that "Microsoft Windows Search Filter Host" and "Microsoft Windows Search Protocol Host" were always using >40% CPU combined. I check "indexing options" in control panel, but it says "indexing complete". I tried "delete and rebuild index", and it finished within 30min, but the two processes above were still running and sucking cpu for no reason.


I tried "trouble shooting windows search" but it returned no problems.


Anyone know how to fix this issue?


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