Fix Remove AVG Incompatible Software Error When Installing Kaspersky KIS and KAV
When installing Kaspersky Internet Security (KIS) or Kaspersky Anti-Virus (KAV), the following “Incompatible Software” window during the setup process wizard will stop and prevent successful installation Kaspersky product. The error that fails the installation of KAV or KIS claims that “Attention! Some incompatible software is installed on your computer. These applications cannot be used together with Kaspersky Internet Security 2009. In order to proceed with the installation, remove these applications.” with AVG 8 the most common listed application.
The “Next” button is disabled and grayed out at this stage, causing user to abandon the setup can cannot or unable to install KIS or KAV. The stop interrupt error happens despite no AVG security software program has been installed on the system previously, or AVG AntiVirus or other product has been uninstall before Kaspersky installation is started.
If user selects and highlights the incompatible software (i.e. AVG 
from the list and clicking the “Remove” button, it will launch Add or Remove Programs. Then another dialog box prompts “In order to proceed with the installation, please remove incompatible software (it is recommended to reboot your computer after uninstallation). Then run the installation again.” There is no way to install Kaspersky without hack.
Kaspersky setup installer has a switch that allow users to forcefully bypass detection of incompatible software during installation of KIS or KAV. But the process can be tedious for novice computer users. The more direct, and easier way is probably to edit the Windows registry to remove any reference keys to AVG software.
To delete all registry keys with reference to AVG security product, run Registry Editor (regedit). Navigate to the following registry key branches:
HKEY_LOCAL_MACHINE\SOFTWARE\AVG
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\AVG8Uninstall
Right click on AVG and AVG8Uninstall respectively, and select Delete to remove the AVG related registry keys. These are two known registry keys that installed by AVG, and should only be removed if there is no longer any AVG programs installed on the PC. User can also click on Edit menu and use Find command to search for AVG related registry keys, but make sure to use common sense to identify which keys is belonged to AVG and which is not. For example, “AVGeneralNotification” is system added key, and should not be deleted.
Once removed, run the Kaspersky setup installer again to install KIS or KAV, and it should works properly now. Note that if you’re encountering incompatible software with products from other vendors as compiled by Kaspersky, such as security software from Agnitum, AhnLab, ALWIL Software, Ashampoo, Authentium Command, Avira, BitDefender, CA, ClamWin, Comodo, Dr.Web, ESET, F-Prot, Grisoft, Lightspeed, McAfee, Norman, Panda, Sophos, Symantec, Trend Micro and etc, just look at the similar registry location to any related registry key for removal.
For user who doesn’t want to risk editing the registry and want to play safe, it’s possible to download and install CCleaner, a freeware, and then use CCleaner to delete all orphan registry entries left behind by AVG and other softwares after uninstallation.
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Entries (RSS)
July 11th, 2008 02:48
[...] The incompatible software problem can also be fixed by removing registry keys related to the detected products. [...]
July 12th, 2008 11:10
You non stop copy!!!!
August 6th, 2008 21:30
Thank you so much! What a simple but brilliant way to take care of the problem. This has also opened me up to some ideas to deal with other program issues I have had in the past.
August 9th, 2008 23:05
thanks alot, how annoying this problem was!
August 24th, 2008 10:24
Thank you so much for sharing your knowlege to fix this AVG problem. It really works!thank you very much!
August 29th, 2008 01:31
Thanks so much! All the other solutions to this problem didn’t seem to work or were too troublesome. This works perfectly!
September 2nd, 2008 07:50
Tanks
September 10th, 2008 03:44
Thanks! I just used this guide, Kaspersky running now.
September 22nd, 2008 05:48
gracias no se imaginan como me ayudaron thnx! bros!
September 30th, 2008 13:11
This information is very usefulled for my system.
September 30th, 2008 22:53
thanks for intelligent reply
October 2nd, 2008 00:41
caralho te amo velho, jesus te ama! bjxmeliga ;*
October 12th, 2008 03:41
Excelente,Obrigado!! 100% satisfeito!!!
October 14th, 2008 00:47
This is great. I tried for hour to find a solution for this AVG problem. Can’t beleive I didn’t remove the key HKEY_LOCAL_MACHINE\SOFTWARE\AVG on the first place.
Thanks.
October 21st, 2008 09:07
Thank you very much!! I had re-installed AVG just to uninstall it again (to try and “fix” the uninstall), restarted countless times, and this would never have occurred to me! Kaspersky’s installing now
November 7th, 2008 20:02
Thank you! Just the answer I was looking for!
November 10th, 2008 23:28
This is the first place that has given me the fix i need.
Thank you
November 12th, 2008 05:10
Ich kann Kaspersky nicht installieren,da ich das AVG nicht gelöscht bekomme.Ich hoffe ihr könnt mir helfen.Vielen Dank Sven
November 23rd, 2008 10:54
hi all
i tried the avg removal tool from avg… and also the ccleaner and also the Kleaner.exe from Kaspersky but it didnt help in the windows vista ultimate version which i am using maybe due to administrator rights. therefore i downloaded the combofix and then it solved all issues for me and i was able to install the kaspersky 2009 version without any hassle. combofix is a great file to download and fix all virus issues and errors arising from malwares and software installations.
November 26th, 2008 12:04
Worked. Thanks.
November 30th, 2008 01:32
Thank you so much for this!
December 3rd, 2008 12:35
Thanks a lot for that information. Well done…you should get a medal.