I am receiving the following message at completion of install of avast home 4.7: “you have upgraded your oper. system. Current install of avast can’t run on this system. need to reinstall.” The avast program does work(I have performed a scan) however the resident scanner feature does not. I have set scanner to standard level but it reverts to disabled when I close the avast program(I assume the scanner is supposed to operate in background at all times). I have Windows xp w/ service pack 2(it has not been recently changed). I have followed
steps in faq re: hidden icons in system tray, used repair avast function in control panel, have used avast uninstall utility to remove and reinstall avast(also used Norton utility 1st to assure removal of prior AV protection) Help!!
Did you change your file system from FAT32 to NTFS?
Are you using avast Home or Professional?
When did you install it for the first time?
I’m using Avast Home. I loaded it a few days ago and had this issue. Checked FAQ’s and 1st tried Norton uninstall utility. I actually ran the Avast uninstall utilty and reinstalled avast today. My c drive is already ntfs.
Can you try again (sorry…)?
- Remove NAV through Add/Remove programs from Control Panel. Boot.
- Use Norton Removal Tool for Windows 2000/XP/Vista. Boot.
- Install avast! (or repair the installation) and boot.
No luck, same message appears. I was very careful to follow the instructions in order. Any thoughts?
Please, post the last 200-250 lines of avast log: C:\Program Files\Alwil Software\Avast4\DATA\log\Setup.log
Ok here goes… If I mess this up, forgive and send me a how to…
10.01.2008 15:00:35.000 1199995235 registry Set registry: SYSTEM\CurrentControlSet\Services\avast! Mail Scanner\Description=Implements mail scanning for avast! antivirus.
10.01.2008 15:00:35.000 1199995235 system Service avast! Mail Scanner updated
10.01.2008 15:00:35.000 1199995235 system Reboot set by changed resident C:\WINDOWS\system32\drivers\aswTdi.sys
10.01.2008 15:00:35.000 1199995235 system Driver file copied: C:\WINDOWS\system32\drivers\aswTdi.sys
10.01.2008 15:00:35.000 1199995235 registry Set registry: SYSTEM\CurrentControlSet\Services\aswTdi\DisplayName=avast! Network Shield Support
10.01.2008 15:00:35.000 1199995235 registry Set registry: SYSTEM\CurrentControlSet\Services\aswTdi\ErrorControl=1
10.01.2008 15:00:35.000 1199995235 registry Set registry: SYSTEM\CurrentControlSet\Services\aswTdi\Type=1
10.01.2008 15:00:35.000 1199995235 registry Set registry: SYSTEM\CurrentControlSet\Services\aswTdi\Group=PNP_TDI
10.01.2008 15:00:35.000 1199995235 registry Set registry: SYSTEM\CurrentControlSet\Services\aswTdi\Start=1
10.01.2008 15:00:35.000 1199995235 system Service ‘aswTdi’ load order set id=8 in group ‘PNP_TDI’
10.01.2008 15:00:36.000 1199995236 registry Set registry: SYSTEM\CurrentControlSet\Services\avast! Web Scanner\Description=Implements web (HTTP) scanning for avast! antivirus.
10.01.2008 15:00:36.000 1199995236 system Service avast! Web Scanner installed
10.01.2008 15:00:36.000 1199995236 system Service avast! Web Scanner dependency avast! Antivirus
10.01.2008 15:00:37.000 1199995237 registry Set registry: SYSTEM\CurrentControlSet\Services\avast! Web Scanner\Description=Implements web (HTTP) scanning for avast! antivirus.
10.01.2008 15:00:37.000 1199995237 system Service avast! Web Scanner updated
10.01.2008 15:00:37.000 1199995237 registry Set registry: SYSTEM\CurrentControlSet\Services\aswRdr\DisplayName=aswRdr
10.01.2008 15:00:37.000 1199995237 registry Set registry: SYSTEM\CurrentControlSet\Services\aswRdr\ErrorControl=1
10.01.2008 15:00:37.000 1199995237 registry Set registry: SYSTEM\CurrentControlSet\Services\aswRdr\Type=1
10.01.2008 15:00:37.000 1199995237 registry Set registry: SYSTEM\CurrentControlSet\Services\aswRdr\Start=3
10.01.2008 15:00:37.000 1199995237 registry Set registry: SYSTEM\CurrentControlSet\Services\aswRdr\Group=PNP_TDI
10.01.2008 15:00:38.000 1199995238 file Shortcut for ashAvast.exe installed in C:\Documents and Settings\All Users\Start Menu\Programs\avast! Antivirus
10.01.2008 15:00:38.000 1199995238 file Shortcut for help.chm installed in C:\Documents and Settings\All Users\Start Menu\Programs\avast! Antivirus
10.01.2008 15:00:38.000 1199995238 file Shortcut for ashAvast.exe installed in C:\Documents and Settings\All Users\Desktop
10.01.2008 15:00:38.000 1199995238 registry Set registry: \shellex\ContextMenuHandlers\avast(null)={472083B0-C522-11CF-8763-00608CC02F24}
10.01.2008 15:00:38.000 1199995238 registry Set registry: avast\ShellEx\ContextMenuHandlers(null)={472083B0-C522-11CF-8763-00608CC02F24}
10.01.2008 15:00:38.000 1199995238 registry Set registry: Folder\shellex\ContextMenuHandlers\avast(null)={472083B0-C522-11CF-8763-00608CC02F24}
10.01.2008 15:00:38.000 1199995238 registry Set registry: CLSID{472083B0-C522-11CF-8763-00608CC02F24}(null)=avast
10.01.2008 15:00:38.000 1199995238 registry Set registry: CLSID{472083B0-C522-11CF-8763-00608CC02F24}\InProcServer32(null)=C:\Program Files\Alwil Software\Avast4\ashShell.dll
10.01.2008 15:00:38.000 1199995238 registry Set registry: CLSID{472083B0-C522-11CF-8763-00608CC02F24}\InProcServer32\ReleaseName=C:\Program Files\Alwil Software\Avast4\ashShell.dll
10.01.2008 15:00:38.000 1199995238 registry Set registry: CLSID{472083B0-C522-11CF-8763-00608CC02F24}\InProcServer32\ThreadingModel=Apartment
10.01.2008 15:00:38.000 1199995238 registry Set registry: SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved{472083B0-C522-11CF-8763-00608CC02F24}=avast
10.01.2008 15:00:38.000 1199995238 registry Set registry: SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved{472083B0-C522-11CF-8763-00608CC02F24}=avast
10.01.2008 15:00:39.000 1199995239 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Run\avast!=C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
10.01.2008 15:00:39.000 1199995239 file Fix security on: C:\Program Files\Alwil Software\Avast4*.
10.01.2008 15:00:40.000 1199995240 file Fix security on: C:\Program Files\Alwil Software\Avast4\ENGLISH*.*
10.01.2008 15:00:40.000 1199995240 file Fix security on: C:\Program Files\Alwil Software\Avast4\ENGLISH\HELP*.*
10.01.2008 15:00:40.000 1199995240 file Fix security on: C:\Program Files\Alwil Software\Avast4\ENGLISH\HtmlData*.*
10.01.2008 15:00:40.000 1199995240 file Fix security on: C:\Program Files\Alwil Software\Avast4\images*.*
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\DisplayName=avast! Antivirus
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\DisplayVersion=4.7
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\HelpLink=http://www.avast.com
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\HelpTelephone=
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\UrlInfoAbout=http://www.avast.com
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\UrlUpdateInfo=http://www.avast.com
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\InstallLocation=C:\PROGRA~1\ALWILS~1\Avast4
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\InstallSource=C:\DOCUME~1\Owner\Desktop
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\Publisher=Alwil Software
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\VersionMajor=4
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\VersionMinor=7
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\DisplayIcon=C:\Program Files\Alwil Software\Avast4\ashAvast.exe
10.01.2008 15:00:41.000 1199995241 registry Set registry: Software\Microsoft\Windows\CurrentVersion\Uninstall\avast!\UninstallString=rundll32 C:\PROGRA~1\ALWILS~1\Avast4\Setup\setiface.dll,RunSetup
10.01.2008 15:00:43.000 1199995243 general License key generated Demo
10.01.2008 15:09:14.000 1199995754 general progress end - forced
10.01.2008 15:09:14.000 1199995754 general progress thread end
10.01.2008 15:09:17.000 1199995757 registry Set registry: Software\Alwil Software\Avast\4.0\Label=Dec2007
10.01.2008 15:09:17.000 1199995757 registry Set registry: Software\Alwil Software\Avast\4.0\Avast4DataFolder=C:\Program Files\Alwil Software\Avast4\DATA
10.01.2008 15:09:17.000 1199995757 registry Set registry: Software\Alwil Software\Avast\4.0\Avast4SkinFolder=C:\Program Files\Alwil Software\Avast4\DATA\Skin
10.01.2008 15:09:17.000 1199995757 registry Set registry: Software\Alwil Software\Avast\4.0\Version=4.7
10.01.2008 15:09:17.000 1199995757 registry Set registry: Software\Alwil Software\Avast\4.0\VersionShort=4.7
10.01.2008 15:09:17.000 1199995757 registry Set registry: Software\Alwil Software\Avast\4.0\SetupVersion=1098
10.01.2008 15:09:17.000 1199995757 package Transferred files: 0
10.01.2008 15:09:17.000 1199995757 package Transferred bytes: 0
10.01.2008 15:09:17.000 1199995757 package Transfer time: 327 ms
10.01.2008 15:09:17.000 1199995757 package Retries total: 0
10.01.2008 15:09:17.000 1199995757 package Retried files: 0
10.01.2008 15:09:17.000 1199995757 package Tried servers: 1
10.01.2008 15:09:17.000 1199995757 file NeedReboot=true
10.01.2008 15:09:17.000 1199995757 file filRenameOnReboot:!bSuccess
10.01.2008 15:09:17.000 1199995757 file filRenameOnReboot:bOnReboot
10.01.2008 15:09:17.000 1199995757 system Reboot set by filRenameOnReboot(C:\Program Files\Alwil Software\Avast4\Setup\reboot.txt,)
10.01.2008 15:09:17.000 1199995757 file MoveFileEx(C:\PROGRA~1\ALWILS~1\Avast4\Setup\reboot.txt, NULL)
10.01.2008 15:09:17.000 1199995757 general Return code: 0x20000000 [Something done]
10.01.2008 15:09:17.000 1199995757 general Stopped: 10.01.2008, 15:09:17
Seems ok… is there much more ‘before’ the part you’ve posted?
Any line with ERROR keyword?
I did not see the word error anywhere. There is lot’s of lines that read as follows:not okay(doesnt exist)
10.01.2008 14:59:28.000 1199995168 package IsFullOkay: setup_av_pro-44a.vpu - not okay (doesn’t exist)
10.01.2008 14:59:28.000 1199995168 package Can’t stat vpu: C:\Program Files\Alwil Software\Avast4\Setup\setup_av_pro-44a.vpu
10.01.2008 14:59:28.000 1199995168 package IsFullOkay: setup_av_pro-44a.vpu - not okay (doesn’t exist)
10.01.2008 14:59:28.000 1199995168 package Can’t stat vpu: C:\Program Files\Alwil Software\Avast4\Setup\setup_av_pro-44a.vpu
10.01.2008 14:59:28.000 1199995168 package SetFullAsMarked: Package setup_av_pro set to 1
10.01.2008 14:59:28.000 1199995168 package IsFullOkay: av_pro_core-3f4.vpu - not okay (doesn’t exist)
I have the very same problem!
This is driving me crazy! I left mcafee because of this kind of thing.
Vista home. IE7
had Mcafee installed.
Complained to brother who suggested you.
registered.
downloaded avast home.
I uninstalled mcafee.
installed avast.
the first 3 times a black dos like box flashed on the screen and then nothing.
I did it again and the installation started.
when it rebooted, I got an error message that avast cannot run on this system and I have to reinstall.
I did.
and again.
Then I came here and saw I needed MCPR.
so I got that and uninstalled avast, ran the MCPR and rebooted and reinstalled.
Same message.
It does all the opening screens and runs a boot scan, but no icon and no resident protection. as far as I know I have no vrius shield.
I am ANGRY.
Why does this have to be so complicated?
The first time I ran the program successfully, I had a log warning that set something failed. This is gone now.
I have a very bad cold.
I have no log messages.
I have no blue ball.
I have no protectiion and my husband has been online all night.
PLEASE HELP. 
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\avast! Antivirus\Description=Manages and implements avast! antivirus services for this computer. This includes the resident protection, the virus chest and the scheduler.
11.01.2008 02:56:21.000 1200038181 system Service avast! Antivirus updated
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\aswUpdSv\Description=Provides automatic updating for the avast! antivirus.
11.01.2008 02:56:21.000 1200038181 system Service aswUpdSv installed
11.01.2008 02:56:21.000 1200038181 system Service aswUpdSv dependency (null)
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\aswUpdSv\Description=Provides automatic updating for the avast! antivirus.
11.01.2008 02:56:21.000 1200038181 system Service aswUpdSv updated
11.01.2008 02:56:21.000 1200038181 system Reboot set by changed resident C:\Windows\system32\drivers\aavmker4.sys
11.01.2008 02:56:21.000 1200038181 system Driver file copied: C:\Windows\system32\drivers\aavmker4.sys
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\Aavmker4\DisplayName=avast! Asynchronous Virus Monitor
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\Aavmker4\ErrorControl=1
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\Aavmker4\Type=1
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\Aavmker4\Start=1
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\aswMon2\DisplayName=avast! Standard Shield Support
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\aswMon2\ErrorControl=1
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\aswMon2\Type=2
11.01.2008 02:56:21.000 1200038181 registry Set registry: SYSTEM\CurrentControlSet\Services\aswMon2\Start=2
11.01.2008 02:56:21.000 1200038181 registry Set registry: SOFTWARE\Microsoft\Exchange\Client\Extensions\avast! 4=4.0;C:\Program Files\Alwil Software\Avast4\ashOutXt.dll;1;10000111111000
11.01.2008 02:56:22.000 1200038182 registry Set registry: SYSTEM\CurrentControlSet\Services\avast! Mail Scanner\Description=Implements mail scanning for avast! antivirus.
11.01.2008 02:56:22.000 1200038182 system Service avast! Mail Scanner installed
11.01.2008 02:56:22.000 1200038182 system Service avast! Mail Scanner dependency avast! Antivirus
11.01.2008 02:56:22.000 1200038182 registry Set registry: SYSTEM\CurrentControlSet\Services\avast! Mail Scanner\Description=Implements mail scanning for avast! antivirus.
11.01.2008 02:56:22.000 1200038182 system Service avast! Mail Scanner updated
What is MCPR?
http://acronyms.thefreedictionary.com/MCPR
This article provides the steps to remove SecurityCenter from your computer.
http://ts.mcafeehelp.com/faq3.asp?docid=71525
Sometimes, McAfee won’t be completely removed if, before, you do not uninstall Avast, including the use of its “Uninstall Application” if necessary (www.avast.com/eng/faq-install-uninstall-avast.html).
I will try that now.
Post back the results 
It did not work.
The actual message is-
“you have upgraded your operating system. Current installation of avast
cannot run on this operating system. The avast system needs to be
reinstalled.”
Now what?
my version nthat I downloaded is 4.7 but the Knowledge base says I need 4.7.9 something.
What did you do, exactly?
The actual version is 4.7.1098.
Well, I read your post.
I downloaded the file to uninstall avast.
I went offline.
I ran the program.
Reboot
I ran the MCPR file.
Reboot
I ran the avast install file.
Reboot
Got the same results. It installs. Asks if I want to schedule a boot scan.
I say no - as it has done one 4 times now. and then my desktop is there with the avast icon - but no blue ball in the sys tray.
Had lunch.
Took my cold meds.
Came back here.
Where is this most recent version of avast? How come I don’t get that in a download?
http://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=17
How to
avast! and Windows Vista
Solution
avast! runs perfectly on Windows Vista, but there are currently two requirements:
- avast! must be version 4.7.942 or newer.
- avast! must be uninstalled prior to upgrade of operating system.
should I try that? or just go get some other program?
Bought this machine in oct. at Best Buy. Very happy with it. Hate Vista.
Acer Aspire 4400+
Vista and IE7
I THINK that the machine had Norton on it originally. I THINK I used the Norton clean uninstall before McAfee. Maybe that was in another life, brother.
I got rid of McAfee because I could not figure out how to change my home page/disable Mcafee’s homepage protection. I spent WEEKS looking for that answer. No response from M other than go to Tools…
What do I do now?
Thank you for being there.
Thank you for answering my questions.
There is nothing like a pc problem to make you feel completley inadequate.
http://www.avast.com/eng/download-avast-home.html
- Remove NAV through Add/Remove programs from Control Panel. Boot.
- Use Norton Removal Tool for Windows 2000/XP/Vista. Boot.
- Install avast! (or repair the installation) and boot.
I downloaded the remove Nav and then looked in programs for Symantec or Nav. Neither shows up there.
I tried to run the program anyway but it asks what I want to remove and I don’t remember what it was called. I do remember using the clean up files that come with Mcafee. Wouldn’t that have removed them?
I just ran the repair tool in programs and clicked on the icon on the desktop. The silver box opens and agin it’s disabled.
BUT I can click on the buttons. It has downloaded something and now I have a 2 messages in the warning log.
1/11/08 8:21:40 appl=3160 Function setifaceUpdatePackages() has failed. Return Code is 0x20000004, dwRes is 20000004.
1/11/08 8:49:58 appl=3288 Same Message
Does this help?