Service host: local service with 3 subtasks - running 25-30% - Microsoft Community

i have windows defender issue

windows 10 pro 64bit
version 1703
os build 15063.296

i use kaspersky total rather windows defender windows defender seems messed , causing issues on pc, , kaspersky:

• service host: local service 3 subtasks - windows firewall, core messaging , base filtering engine running @ around 26% cpu
  
• windows defender showing "!" in system tray
  

• on windows defender firewall , network tab windows defender reports "windows firewall using settings may make device unsafe"
  
• on same tab there button "restore settings" - clicking prompts allow change makes no difference. 
• any web page shows "resolving host" extended period before opening 

• downloads take few minutes before save dialogue opens

the issue started yesterday when reset kaspersky default settings clear constraints.  having re-cycled kaspersky (i guess went off line during this) windows defender tried take on seems stuck in loop firewall task taking high cpu.  

on windows defender firewall , network tab (where see message "windows firewall using settings may make device unsafe" there button "restore settings" - clicking prompts allow change makes no difference. 

having got situation windows defender not allow kaspersky app take on run firewall.  assumed maybe screwed process took off kaspersky , re-installed - used kaspersky removal tool in safe mode make sure gone.  kaspersky off pc windows firewall still in same state.  

i tried firewall diag (windowsfirewall.diagcab) in safe mode because in normal windows mode hung saying checking  - reported firewall - have looked through installed programs , there nothing else there.

i re-installed kaspersky - took couple of hours because of issues caused windows defender got there.  issue firewall did not go away , defender still showed error messages described above.  5 hours later situation had not changed morning problem appeared solve itself. 

i did notice overnight windows applied definition update "installation successful: windows installed following update: definition update windows defender - kb2267602 (definition 1.243.792.0)" - don't know if connected change or looping , processed whatever trying process.

to verify if issue solved or masked disabled , re-enabled kaspersky firewall - having disabled windows defender went same loop again , not allow me re-enable kaspersky firewall ...

after 2 hours tried again , re-enabled kaspersky same issues - high cpu on windows firewall, error message on firewall tab , ! in system tray.

reading forums see others same issue - tried use microsoft support via chat service said wanted charge me privilege of fixing appears issue software ...  

anyone got magic incantation solve ?  don't seem able close down windows defender stop getting in way - there way?  

ideas welcome ... or if not "same me" tags.

* moved moderator appropriate forum category. *

hi,

we understand having issues windows defender. assist concern, advise disable windows defender , windows firewall services. may refer steps below on how disable them:

1. open cortana.
2. type services.
3. click on windows defender , windows firewall.
4. click on stop.
5. change startup type disabled.

do update result , if need further assistance.

regards.

Windows / Windows 10 / Security & privacy