Had to remove Avast AV from my Windows 10 Computer due high cpu 80% Plus

I don’t what done with the latest update. But it has TOTALLY SCREWED both virus definition updates which stopped working on or around Mar 4th 2018.
The update installer once started never shuts down and the manual update says either that there already a process running!!!
The manual update fails due “setup already running” - Which also blocks the installer “repair” option.
The only way rid was to delete avast outstart entries then boot to safe mode and run the Uninstaller and run avast cleaner utility.
After which I manually removed the remaining registry keys which were still there! An uninstallation should not leave no trace of itself any where!!.
There were still stubs pointing the Avast’s .sys files in system.

Which version of Windows 10 ???

Hi Windwos 10 Home withe the latest updates on.
I have attached dumps from dxdiag
Reported version is :- 10.0.16299 Build 16299
Windows update history shows :-
Most recent feature update
20/02/2018 for Window 10 Version 1709.
Cummatlite “Quality” update prior to the problem was
https://support.microsoft.com/en-us/help/4074588/windows-10-update-kb4074588
Installed just prior to removal avast -
https://support.microsoft.com/en-us/help/4088776/windows-10-update-kb4088776

You are still not totally up to date.
There was an update released on 3/13/2018

https://screencast-o-matic.com/screenshots/u/Lh/1521151014835-26860.png

I didn’t list every update only the ones that logically might have affected avast.
Adobe flash update is actually installed but not sure why a flash would affect either the update a or high cpu.
Any way Further to the last update the online installer program also fails.
Log below.

2018-03-18 00:17:18.708Infoinstup[3104,9636]Command: ‘“C:\Users\chudd\AppData\Local\Temp_av_iup.tm~a04820\instup.exe” /edition:1 /ga_clientid:638ed306-ec8b-4c69-a4eb-6e813044dfb7 /guid:b0cbace8-9a3d-4b7b-971e-d3005d347ff5 /prod:ais /sfx:lite /sfxstorage:C:\Users\chudd\AppData\Local\Temp_av_iup.tm~a04820’
2018-03-18 00:17:18.708Infoinstup[3104,9636]CPU: Intel(R) Core™ i7-7700HQ CPU @ 2.80GHz,8
2018-03-18 00:17:18.708Infoinstup[3104,9636]OS: Windows 10 (10.0.16299) x64
2018-03-18 00:17:18.708Infoinstup[3104,9636]Memory: 23% load. Phys:4194303/4194303K free, Page:4194303/4194303K free, Virt:3964816/4194176K free
2018-03-18 00:17:18.708Infoinstup[3104,9636]DISKs: C:\ - 52GB free / 117GB total
2018-03-18 00:17:18.709Infoinstup[3104,9636]DISKs: D:\ - 897GB free / 1844GB total
2018-03-18 00:17:18.709Infoinstup[3104,9636]Running module version: instup.exe - ‘18.2.3827.0’
2018-03-18 00:17:18.709Infoinstup[3104,9636]Running module version: Instup.dll - ‘18.2.3827.0’
2018-03-18 00:17:18.718Infomutex[3104,9636]The ownership of the fallback mutex has been successfully taken.
2018-03-18 00:17:18.743Warningsettings[3104,9636]Did not find any values in file ‘programData\avast5.ini’
2018-03-18 00:17:18.775Infoshepsync[3104,9636]Trying server IP address ‘shepherd.ff.avast.com
2018-03-18 00:17:18.992Infoshepsync[3104,9636]Download of config file from shepherd.ff.avast.com succeeded.
2018-03-18 00:17:19.015Infoshepsync[3104,9636]Config file successfully updated
2018-03-18 00:17:19.019Infoshepsync[3104,9636]Postpone interval was reset
2018-03-18 00:17:19.036Warningsettings[3104,5136]Did not find any values in file ‘programData\burger_client.ini’
2018-03-18 00:17:19.213Infowizard[3104,9636]Running module version: HTMLayout.dll - ‘3.3.2.1’
2018-03-18 00:17:19.244Infowizard[3104,9636]Loaded module version: C:\Users\chudd\AppData\Local\Temp_av_iup.tm~a04820\HTMLayout.dll - ‘3.3.2.1’
2018-03-18 00:17:19.353Infowizard[3104,9636]Setup gui was successfully started.
2018-03-18 00:17:19.353Infoinstcore[3104,9636]Sfx setup update has started.
2018-03-18 00:17:19.362Infoservers[3104,9636]Server definition(s) loaded for ‘C:\Users\chudd\AppData\Local\Temp_av_iup.tm~a04820\servers.def’: 29 (maintenance:0)
2018-03-18 00:17:19.362Infoservers[3104,9636]ChooseServer: selected server ‘Download c5983736 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:17:34.377Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:17:34.381Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘http://c5983736.iavs9x.u.avast.com/iavs9x/servers.def.vpx’. Next try: 1
2018-03-18 00:17:34.383Infoservers[3104,9636]ChooseServer: selected server ‘Download h2076260 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:17:51.391Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:17:51.395Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘http://h2076260.iavs9x.u.avast.com/iavs9x/servers.def.vpx’. Next try: 2
2018-03-18 00:17:51.398Infoservers[3104,9636]ChooseServer: selected server ‘Download j2123265 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:18:08.409Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:18:08.414Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘http://j2123265.iavs9x.u.avast.com/iavs9x/servers.def.vpx’. Next try: 3
2018-03-18 00:18:08.417Infoservers[3104,9636]ChooseServer: selected server ‘Download b5631766 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:18:25.433Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:18:25.452Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/servers.def.vpx’. Next try: 4
2018-03-18 00:18:25.455Infoservers[3104,9636]ChooseServer: selected server ‘Download k7105463 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:18:42.466Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:18:42.469Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/servers.def.vpx’. Next try: 5
2018-03-18 00:18:42.472Infoservers[3104,9636]ChooseServer: selected server ‘Download f2655181 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:18:59.482Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:18:59.502Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/servers.def.vpx’. Next try: 6
2018-03-18 00:18:59.505Infoservers[3104,9636]ChooseServer: selected server ‘Download f4135468 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:19:16.518Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:19:16.521Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/servers.def.vpx’. Next try: 7
2018-03-18 00:19:16.524Infoservers[3104,9636]ChooseServer: selected server ‘Download k7105463 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:19:33.539Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:19:33.558Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/servers.def.vpx’. Next try: 8
2018-03-18 00:19:33.561Infoservers[3104,9636]ChooseServer: selected server ‘Download x9592796 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:19:50.582Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:19:50.601Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/servers.def.vpx’. Next try: 9
2018-03-18 00:19:50.604Infoservers[3104,9636]ChooseServer: selected server ‘Download j2123265 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:20:07.620Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:20:07.640Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/servers.def.vpx’. Next try: 10
2018-03-18 00:20:07.643Infoservers[3104,9636]ChooseServer: selected server ‘Download r1513284 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:20:09.645Infoservers[3104,9636]ChooseServer: selected server ‘Download s5732833 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:20:24.662Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:20:24.665Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘http://s5732833.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx’. Next try: 1
2018-03-18 00:20:24.668Infoservers[3104,9636]ChooseServer: selected server ‘Download c5983736 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:20:41.674Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:20:41.678Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘http://c5983736.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx’. Next try: 2
2018-03-18 00:20:41.680Infoservers[3104,9636]ChooseServer: selected server ‘Download z1686792 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:20:58.686Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:20:58.689Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘http://z1686792.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx’. Next try: 3
2018-03-18 00:20:58.692Infoservers[3104,9636]ChooseServer: selected server ‘Download f4135468 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:21:15.710Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:21:15.713Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/prod-pgm.vpx’. Next try: 4
2018-03-18 00:21:15.716Infoservers[3104,9636]ChooseServer: selected server ‘Download c5983736 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:21:32.734Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:21:32.737Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/prod-pgm.vpx’. Next try: 5
2018-03-18 00:21:32.740Infoservers[3104,9636]ChooseServer: selected server ‘Download n5702781 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:21:49.748Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:21:49.751Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/prod-pgm.vpx’. Next try: 6
2018-03-18 00:21:49.754Infoservers[3104,9636]ChooseServer: selected server ‘Download g0431773 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:22:06.763Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:22:06.767Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/prod-pgm.vpx’. Next try: 7
2018-03-18 00:22:06.769Infoservers[3104,9636]ChooseServer: selected server ‘Download k3796670 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:22:23.781Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:22:23.785Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/prod-pgm.vpx’. Next try: 8
2018-03-18 00:22:23.787Infoservers[3104,9636]ChooseServer: selected server ‘Download l8963012 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:22:40.804Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:22:40.823Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/prod-pgm.vpx’. Next try: 9
2018-03-18 00:22:40.826Infoservers[3104,9636]ChooseServer: selected server ‘Download l2591751 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:22:57.831Errordldwrap[3104,9636]HttpGet: download failed with error 0x00002bdc!
2018-03-18 00:22:57.854Errordldwrap[3104,9636]HttpGet: An error 41227 (0x0000A10B) [Downloader system error] has occured when downloading a file from ‘https://s-iavs9x.avcdn.net/iavs9x/prod-pgm.vpx’. Next try: 10
2018-03-18 00:22:57.857Infoservers[3104,9636]ChooseServer: selected server ‘Download b1652951 AVAST9 Server’ of type ‘URL_TYPE_DOWNLOAD_PROGRAM’.
2018-03-18 00:22:59.859Errorengine[3104,9636]LoadLatestProdAndParts: download product file ‘prod-pgm.vpx’ has failed. Status: 41227 (0x0000A10B) [Downloader system error]
2018-03-18 00:22:59.893Warningsettings[3104,5132]Did not find any values in file ‘programData\avast5.ini’
2018-03-18 00:22:59.893Warningsettings[3104,5136]Did not find any values in file ‘C:\ProgramData\AVAST Software\Avast\burger_client.ini’
2018-03-18 00:22:59.893Warningsettings[3104,5132]Did not find any values in file ‘C:\ProgramData\AVAST Software\Avast\avast5.ini’

HttpGet: An error 41227 .........
Change your DNS to Google or OpenDNS and try again

https://developers.google.com/speed/public-dns/
https://www.opendns.com/