Super User
Super User

Questions tagged [svchost]

Services host. This process is used by Windows to host services.

Svchost.exe is a generic host process name for services that run from dynamic-link libraries (DLLs).

The Svchost.exe file is located in the %SystemRoot%\System32 folder. At startup, Svchost.exe checks the services part of the registry to construct a list of services that it must load. Multiple instances of Svchost.exe can run at the same time. Each Svchost.exe session can contain a grouping of services. Therefore, separate services can run, depending on how and where Svchost.exe is started. This grouping of services allows for better control and easier debugging.

118 questions
86
votes
5 answers

svchost.exe high memory usage - wuauserv

I'm running Windows 7, and I've been experiencing high memory usage from one of my svchost.exe processes. Services under that particular process are BITS, EAPHost, IKEEXT, LanmanServer, MMCSS, ProfSVC, RasMan, Schedule, SENS, SharedAccess,…
Oliver
  • 1,343
35
votes
9 answers

Why/how is svchost.exe using 6.5GB of memory?

What is going on here? I have almost nothing running. By almost nothing, I mean Firefox, and some background network applications that are entirely passive and would never use this much memory. Related services: UxSms, TrkWks, SysMain, PcaSvc,…
Status3543
  • 3,461
24
votes
12 answers

How do I troubleshoot high 'svchost.exe' usage in Windows 7?

I'm having a problem with Windows 7 64-bit. I thought it was slow and all, but then I saw that the CPU usage was always around 80% and started searching for a solution. There are two svchost.exe's consuming around 30% each and in the resources…
Leonardo
  • 261
18
votes
2 answers

Isolate hosted service (svchost.exe) in its own process

As many superusers are probably aware by now, svchost.exe is used by Microsoft to host multiple Windows services in a single process, with one process per service group. In Windows 7 (and later?), one can right click on a specific svchost.exe…
Søren Løvborg
  • 370
17
votes
1 answer

svchost.exe eating CPU: which of these services can be the cause?

Thanks to these awesome instructions I was finally (!) able to identify the services of the svchost.exe process which eats so much of my CPU on my Windows XP Professional SP3 (Version 2002): Process PID …
Tomas
  • 8,080
16
votes
8 answers

Is there a way to determine which service (in svchost.exe) does an outgoing connection?

I'm redoing my firewall configuration with more restrictive policies and I would like to determine the provenance (and/or destination) of some outgoing connections. I have an issue because they come from svchost.exe and go to web…
fluxtendu
  • 7,219
13
votes
5 answers

HDD activity when computer is idle

What can cause HDD activity when computer is left idle? My HDD is quite loud and I want to get rid of the noise when computer is idle. It happens on Windows 7, automatic defragmentation and antivirus background scanning are turned off. Recently…
mondzi
  • 133
12
votes
1 answer

In TCPView, why does the svchost.exe process need to listen on so many TCP and UDP ports

Looking at TCPView I can see over 25 svchost processes using TCP and UDP ports. If these svchost processes are the various services required by Windows, then why would so many be using the network?
Larry B
  • 255
11
votes
2 answers

svchost.exe using lots of memory slowing my PC down

On my Windows 7 32-bit. svchost.exe is using lots of Memory and slowing my PC down big time. I already have auto update turned off and it is on manual mode. How can I fix this problem? Thanks
user206168
  • 456
11
votes
3 answers

After Windows 10 Fall Creators Update, a svchost.exe instance is constantly using CPU time

Since installing the Windows 10 Fall Creators Update, I have a svchost.exe process that is constantly using about 14​ % of CPU time: This svchost.exe instance is responsible for hosting three services: The CPU time is consumed by a thread inside…
fefrei
  • 397
9
votes
6 answers

svchost.exe Hogging CPU on Fresh XP Install

I got an ISO of Windows XP Professional with SP3 integrated from dreamspark. I burned it onto a DVD, and installed onto an old computer of mine. The first thing I did after installation was install the graphics drivers as I can't stand the extreme…
Alex
  • 1,056
7
votes
3 answers

svchost eating up memory

I'm running Windows 7. It seems that svchost is eating up a lot of memory. The user name for the particular svchost instance is "Network Service". The description is "Host Process for Windows Services". Sometimes it eats up 50% of the CPU usage.…
boo-urns
  • 591
6
votes
4 answers

svchost.exe taking 25% cpu

For some time now I have been noticing that one of my svchost.exe was constantly taking 25% cpu time on my 4 core, Win7 Ultimate PC. This particular service host is hosting: Cryptographic Services (CryptSvc) Dns Client (DnsCache) Network Location…
Mikle
  • 171
6
votes
1 answer

Windows 7 Firewall outbound allow rule for CryptSvc not matching

I am using Windows 7 firewall with outbound filtering enabled. Windows Firewall does not provide an UI for new outbound connection prompts, it just blocks them. Windows Firewall Control solves this using a workaround - it enables audit logging of…
theultramage
  • 346
5
votes
1 answer

Windows update using svchost.exe?

Lately I have been experiencing a lot of computers on our network being bogged down by svchost.exe. Nearly 50-100% CPU usage is associated with this process and I can't seem to figure out how to nix the issue. The most recent updates are applied but…
Cpt. Jack
  • 355
  • 1
  • 4
  • 10
1
2 3 4 5 6 7 8