ilcorsaro73 Posted August 13 Share Posted August 13 Hi, I don't know if this is the right section. I can't update Kaspersky Plus 21.17.7.539(b), let alone install the latest update [21.18.5.438.0.61.0], every time I try, in fact I get the error message figure with the text unknown error I have already tried to use kav remover and completely uninstall the application but the next time I restart by downloading the setup and starting it the installation stops and the unknown error message strangely appears again with the installation of any application kaspersky I know Windows 11 Pro build 22631.3880 Kalju 1 Quote Link to comment Share on other sites More sharing options...
Karlston Posted August 13 Share Posted August 13 Moved from Support. @ilcorsaro73 Your question is better in this forum ("Discussion relating to security and privacy issues and software."), Support forum is for Site support. shwescorpion 1 Quote Link to comment Share on other sites More sharing options...
xkryptonx Posted August 14 Share Posted August 14 There could be several reason for it. Lets cover it one by one. 1. Traces of previous un/installation that interferes with process. a. What you can do is reboot you PC and try again. b. Go to ProgramData\ and delete any Kaspersky Folders there. Then Use KTL to remove traces of any previous products. c. Use Kaspersky remover to remove traces of previous installation that is not removed properly or when there is a faulty uninstallation. Site: https://support.kaspersky.com Sharecode [?]: /common/uninstall/1464 2. Make sure you have proper installer downloaded from official or trusted source(s) 3. Make sure your internet connection is alive and up while installing the product. 4. Make sure no other AVs are there on this system that could interfere with process. 5. Sometimes, some virus or malicious programs won't allow AVs to install. Use Kaspersky Rescue Disk or Kaspersky Virus Removal Tool to check for such viruses. KVR Tool: Site: https://www.kaspersky.com Sharecode [?]: /downloads/free-virus-removal-tool Kaspersky Rescue Disk: Site: https://www.kaspersky.com Sharecode [?]: /downloads/free-rescue-disk Hope it helps Karlston and phen0men4 2 Quote Link to comment Share on other sites More sharing options...
shwescorpion Posted August 14 Share Posted August 14 @ilcorsaro73 Did you try offline installation? Kaspersky Plus 21.17.7.539b Offline installer Kaspersky Plus (Global) 21.18.5.438 Offline installer Karlston 1 Quote Link to comment Share on other sites More sharing options...
ilcorsaro73 Posted August 14 Author Share Posted August 14 (edited) Thank you all for the answers but I have tried them all but I think there is nothing to be done I tried to uninstall the program from the control panel then I used the removal tool I manually deleted the files present in ProgramData\ the license is original but trial for 6 months so I re-downloaded the setup from the personal area but every time I start the installation or to update it stops with the unknown error message the only thing I haven't tried yet is the ktl Edited August 14 by ilcorsaro73 Quote Link to comment Share on other sites More sharing options...
DLord Posted August 14 Share Posted August 14 @ilcorsaro73 How about removing registry traces? If you are sure there are no leftover files on the hard drive, the only place that could have residue traces is the registry. Quote Link to comment Share on other sites More sharing options...
MISSYOU Posted August 14 Share Posted August 14 (edited) I think there's an error in your Windows file system. If you've already tried installing the offline version and it didn't work, I recommend you try the following to repair the files. https://answers.microsoft.com/en-us/windows/forum/all/sfc-scannow-and-dismexe-online-cleanup-image/db3b24de-a261-403e-9d11-8141d13f7954 Then use Kaspersky's uninstall tools to remove all files including the Registry, and then try installing again Edited August 14 by MISSYOU Quote Link to comment Share on other sites More sharing options...
ilcorsaro73 Posted August 14 Author Share Posted August 14 I have already tried the dism and scannow commands as well as manually removing all the entries in the system registry one by one and using programs such as wise registry cleaner revo uninstaller or iobit unistaller but if I try to download the setup and launch it unknown error the beautiful thing and which today updated itself to 21.18.5.438. but if I try to uninstall it normally and reinstall the latest version with offline setup, no unknown error Quote Link to comment Share on other sites More sharing options...
thast Posted October 3 Share Posted October 3 were u able to fix it? Quote Link to comment Share on other sites More sharing options...
Radpop Posted October 4 Share Posted October 4 @ilcorsaro73 For me Kaspersky free left Kaspersky as one AV provider in Windows Security Center. Even KAV remover couldn't remove it. Check if there is key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\Provider\Av\{4F76F112-43EB-40E8-11D8-F7BD1853EA23} left after Kaspersky uninstall. I used Registrar home to remove it and other Kaspersky traces from registry. Quote Link to comment Share on other sites More sharing options...
ilcorsaro73 Posted October 4 Author Share Posted October 4 (edited) good evening I updated to windows 11 24h2 and only then was I able to reinstall it Edited October 10 by ilcorsaro73 dvault 1 Quote Link to comment Share on other sites More sharing options...
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