[SOLVED] DNSCACHE (i.e., dns client: a Windows service) high cpu. FIX: I disabled the Wi-Fi Adapter.

xilolee · Jul 6, 2023

Launch this command (and post here its result): tasklist /m /fi "services eq dnscache" /nh
I get:

Read More:

Let's try to set (or change) public dns servers:

Code:

netsh interface ipv4 set dnsservers "Ethernet" static 1.1.1.1
netsh interface ipv4 add dnsservers "Ethernet" 8.8.4.4 2
netsh interface ipv4 add dnsservers "Ethernet" 8.8.8.8 2
netsh interface ipv4 add dnsservers "Ethernet" 1.0.0.1 2

Notes:
- I used "Ethernet" because is the name of my connection. Yours could have a different name.
- The first one set will be the first one in the list.
- The first one added will be the last one.
- The last one added will be the second one.
Reboot and see if something changes.

Triple Helix · Jul 6, 2023

Microsoft Windows [Version 10.0.19045.3155]
(c) Microsoft Corporation. All rights reserved.

C:\Windows\system32>tasklist /m /fi "services eq dnscache" /nh

svchost.exe 2528 ntdll.dll, KERNEL32.DLL, KERNELBASE.dll,
sechost.dll, RPCRT4.dll, ucrtbase.dll,
combase.dll, kernel.appcore.dll,
msvcrt.dll, bcryptPrimitives.dll,
user32.dll, win32u.dll, GDI32.dll,
gdi32full.dll, msvcp_win.dll, dnsrslvr.dll,
WS2_32.dll, NSI.dll, DNSAPI.dll,
WINNSI.DLL, IPHLPAPI.DLL, WLDP.DLL,
advapi32.dll, Fwpuclnt.dll, bcrypt.dll,
gpapi.dll, firewallapi.dll, fwbase.dll,
nrpsrv.DLL, mswsock.dll, dhcpcsvc6.DLL,
dhcpcsvc.DLL, CRYPTBASE.dll

I will try the rest tomorrow Thanks!

Triple Helix · Aug 28, 2023

I just found the issue! I use a Ethernet connection (Laptop) and I was having Wi-Fi issues on other devices and on this Laptop I disabled the Wi-Fi Adapter the and now the CPU usage is back to normal... I would of never though the Wi-Fi would be the cause of this kind of issue so it's solved!

Thanks!

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[SOLVED] DNSCACHE (i.e., dns client: a Windows service) high cpu. FIX: I disabled the Wi-Fi Adapter.

xilolee

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Triple Helix

Microsoft MVP
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Triple Helix

Microsoft MVP
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[SOLVED] DNSCACHE (i.e., dns client: a Windows service) high cpu. FIX: I disabled the Wi-Fi Adapter.

xilolee

Moderator

Triple Helix

Microsoft MVPContributor

Triple Helix

Microsoft MVPContributor

Attachments

Microsoft MVP
Contributor

Microsoft MVP
Contributor