sgavriel Posted August 3, 2023 Share Posted August 3, 2023 I downloaded at 30.7.2023 the "Kaspersky Virus Removal Tool application" (https://www.kaspersky.com/downloads/free-virus-removal-tool). For the first time it asked for reboot for drivers (before the scan). But the system, Windows 11 pro 22H2 (OS build 2261.2070) version 10.0.2261 Build 22621, failed to start. There was nothing I could do but to restore to my latest retore point, to fix it. Since then I'm afraid to use KVRT again. Did anyone had this same problem? Please check the KVRT.exe. It act like a virus this time. Link to comment Share on other sites More sharing options...
harlan4096 Posted August 3, 2023 Share Posted August 3, 2023 Welcome to Kaspersky Community. Was there in that W11 system a Kaspersky products installed? 1 Link to comment Share on other sites More sharing options...
Yury N. Posted August 3, 2023 Share Posted August 3, 2023 (edited) Hello. No other such complaints. Seems it's specific of your computer. Please 1) Run KVRT with traces https://support.kaspersky.com/kvrt2020/diagnostics/15677 2) Decline reboot (select "Continue without reboot") 3) "Start scan" and wait complete 4) Close KVRT 5) Send traces to me in private message After that the system should boot. Check by rebooting yourself. Edited August 3, 2023 by Yury N. 2 1 Link to comment Share on other sites More sharing options...
epizarro Posted August 3, 2023 Share Posted August 3, 2023 Confirmed Link to comment Share on other sites More sharing options...
Yury N. Posted August 3, 2023 Share Posted August 3, 2023 (edited) We reproduced the issue. The problem is caused by a bug in Microsoft cummulative patch for Win11 22H2 (22621.2070). We reported to Microsoft and asked to fix it asap. Edited August 3, 2023 by Yury N. 2 Link to comment Share on other sites More sharing options...
Yury N. Posted August 4, 2023 Share Posted August 4, 2023 We did not wait Microsoft fix and released a workaround. Please download latest KVRT and try again. 1 Link to comment Share on other sites More sharing options...
sgavriel Posted August 8, 2023 Author Share Posted August 8, 2023 On 8/3/2023 at 10:29 AM, harlan4096 said: Welcome to Kaspersky Community. Was there in that W11 system a Kaspersky products installed? No installation. Just using the KVRT.exe as is. Link to comment Share on other sites More sharing options...
sgavriel Posted August 8, 2023 Author Share Posted August 8, 2023 On 8/3/2023 at 11:44 AM, Yury N. said: Hello. No other such complaints. Seems it's specific of your computer. Please 1) Run KVRT with traces https://support.kaspersky.com/kvrt2020/diagnostics/15677 2) Decline reboot (select "Continue without reboot") 3) "Start scan" and wait complete 4) Close KVRT 5) Send traces to me in private message After that the system should boot. Check by rebooting yourself. Already done that when I wrote to the support team via email. The found nothing. Probably due the the resror I did. Link to comment Share on other sites More sharing options...
sgavriel Posted August 8, 2023 Author Share Posted August 8, 2023 On 8/5/2023 at 12:42 AM, Yury N. said: We did not wait Microsoft fix and released a workaround. Please download latest KVRT and try again. Thanks. Will do. Must say I'm still a bit afraid to use it again. Link to comment Share on other sites More sharing options...
Christos Posted August 11, 2023 Share Posted August 11, 2023 It just happened to me too. My PC won't boot at all neither in BIOS menu or anything. What should I do ? Link to comment Share on other sites More sharing options...
sgavriel Posted August 17, 2023 Author Share Posted August 17, 2023 KVRT version 20.0.11.0 is fixed and working OK. Link to comment Share on other sites More sharing options...
Christos Posted August 21, 2023 Share Posted August 21, 2023 On 8/11/2023 at 8:21 PM, Christos said: It just happened to me too. My PC won't boot at all neither in BIOS menu or anything. What should I do ? I was able to "fix it" without having to "restore to my latest retore point" . Basically, after Windows automatic repair was failing without solving it, 1. Uninstalled latest Windows update from there 2. Opened cmd and executed: sfc /scannow - which stated that found broken windows files and fixed them 3. Performed another automatic repair, which managed to boot my PC in a "updating state" 4. Restart PC There is NO chance of using KVRT again. P.S. If you have two monitors plugged, idk why but for me only the HDMI port from my graphics card was able to display anything on the output. Link to comment Share on other sites More sharing options...
zzamzam Posted October 15, 2023 Share Posted October 15, 2023 (edited) Had the same issue with KVRT 20.0.10.0 and Win 11 22H2 (22621.2428) I was able to fix it by deleting the kvrt drivers with windows restore cmd Run "Command Prompt" from the "Troubleshoot -> Advanced Options" Go to "Windows\System32\drivers" on the disk of your windows installation (you can list all disks with the `fsutil fsinfo drives` command and find the right one) fsutil fsinfo drives cd /D <YOUR_DRIVE>:\Windows\System32\drivers Search for *.sys files created recently (list by creation time). Must be some <random-8-characters>.sys and klupd_*.sys dir /OD /TC Remove these *.sys files Close cmd and reboot Success! Edited October 15, 2023 by zzamzam Link to comment Share on other sites More sharing options...
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