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LQQ posted a topic in Kaspersky: Basic, Standard, Plus, PremiumI wanted to document an edge case I encountered in February 2025 that ultimately took many months to fully diagnose. I hope this helps Kaspersky support or anyone experiencing similar symptoms. Summary of the problem It started on a physical Windows 7 Professional x64 workstation. The workstation contains critical old software I still use. After performing, using a physical genuine Windows 7 DVD, an in-place repair installation (installing Windows 7 over an existing Windows 7 installation), Windows booted successfully, but the keyboard and mouse no longer functioned. No mouse and no keyboard actions were possible. I could not get past the screen that required entering the product key. I tried multiple physical (used and band new) USB keyboards and mice. They did not work. After exhausting all options I could think of, I concluded the PC hardware – 17 years old – has become faulty. Because I could not restore normal operation on the physical machine, I eventually converted the installation to a Hyper-V VHDX in an attempt to continue troubleshooting. The same keyboard and mouse problem remained in the virtual machine. Sequence of events The sequence was approximately: Existing Windows 7 Professional x64 installation with Kaspersky installed. Windows began reporting filesystem problems during integrity checks (chkdsk reported errors that could not be permanently resolved, among other problems). The system was also experiencing NVIDIA graphics driver issues. To repair both the Windows installation and the driver problems, I performed an in-place repair installation. After the repair, Windows booted, but the keyboard and mouse no longer functioned. After numerous unsuccessful attempts to repair the physical installation, I created a VHDX using Disk2VHD and migrated the system into Hyper-V. After resolving the some storage-controller boot issues in Hyper-V, the exact same problem was still present. This eventually led to examining the keyboard class driver stack in the offline registry. During investigation I loaded the offline SYSTEM hive and examined: HKLM\SYSTEM\CurrentControlSet\Control\Class\ {4D36E96B-E325-11CE-BFC1-08002BE10318} The UpperFilters value contained: kbdclass 0klmouflt.k4w-21-19 The same filter was also present in the fallback ControlSet. Probable root cause Windows repair installation left the Kaspersky keyboard filter registered in the keyboard device stack while something about the filter installation itself was no longer valid. Windows continued attempting to load the filter during keyboard initialization, resulting in the loss of keyboard and mouse. Solution A. Keyboard recovery — offline registry repair 1. Load the Windows SYSTEM hive Identify the Windows installation drive. In my case it was D:. reg load HKLM\TEMP D:\Windows\System32\Config\SYSTEM 2. Check the keyboard class driver's UpperFilters reg query "HKLM\TEMP\ControlSet001\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}" /v UpperFilters Value: kbdclass 0klmouflt.k4w-21-19 The second entry was the Kaspersky keyboard filter. 3. Remove the existing UpperFilters value reg delete "HKLM\TEMP\ControlSet001\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}" /v UpperFilters /f Check the fallback ControlSet and removed its UpperFilters value if it contained the Kaspersky filter: reg delete "HKLM\TEMP\ControlSet002\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}" /v UpperFilters /f 4. Recreate UpperFilters with only kbdclass For ControlSet001: reg add "HKLM\TEMP\ControlSet001\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}" /v UpperFilters /t REG_MULTI_SZ /d kbdclass /f For ControlSet002, if applicable: reg add "HKLM\TEMP\ControlSet002\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}" /v UpperFilters /t REG_MULTI_SZ /d kbdclass /f 5. Unload the SYSTEM hive reg unload HKLM\TEMP Reboot Windows. Result: The keyboard began working normally. B. Mouse recovery — offline registry repair Similar approach. reg load HKLM\TEMP D:\Windows\System32\Config\SYSTEM reg query "HKLM\TEMP\ControlSet001\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}" /v UpperFilters Value: mouclass 0klmouflt.k4w-21-19 reg delete "HKLM\TEMP\ControlSet001\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}" /v UpperFilters /f reg delete "HKLM\TEMP\ControlSet002\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}" /v UpperFilters /f For ControlSet001: reg add "HKLM\TEMP\ControlSet001\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}" /v UpperFilters /t REG_MULTI_SZ /d mouclass /f For ControlSet002, if applicable: reg add "HKLM\TEMP\ControlSet002\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}" /v UpperFilters /t REG_MULTI_SZ /d mouclass /f reg unload HKLM\TEMP Rreboot Windows. Result: The mouse function was restored. C. Physical-machine recovery I’d imagine the same approach would work on the physical machine. For now, I’m going to stick to the VM, and repurpose the PC for something else. If anyone from Kaspersky has seen this behavior after an in-place Windows repair installation, I would be interested in knowing whether this is a known issue with the keyboard filter driver or whether there is an official recovery procedure. -
tcwe posted a topic in Kaspersky: Basic, Standard, Plus, PremiumHello Should I right-click -> Exit from Kaspersky applications before running the GSI tool? Thanks in advance! Kaspersky Premium v.21.26.4.406 + Kasp. VPN Windows 11 Home 25H2 -
Atzoulos replied to Atzoulos's topic in Kaspersky Endpoint Security for BusinessMany thanks for your quick response. I will definitely create a ticket, but first I must collect all the proper data. I will come back here later to post the ticket link to mark the ticket as the solution to the topic. Thanks again Ahnaf -
Psiu47 replied to Psiu47's topic in Kaspersky: Basic, Standard, Plus, PremiumSo 'Full scan' and 'Quick scan' are showing the same behavior whenever a compacted path or request KS main user password to verify them. I've tried to untick the function about 'Scan protected password archives' but along the ongoing scan is being executed. The password notification os asked again. The issue as I've putt up to test is that my KS main user password is somehow being ignored or being acknowledge like a invalid password entry, and the only form is to continue to ignore them. My password or anything eles is being accused as It seems invalid to deeply 'Scan protected password archives'. However the same and KS user password to gain access to configurations, sabe changed done or access onto Report page still work. So this odd behavior is affecting only in 'Scan protected password archives' functionality. Previously in Kaspersky Standard 21.25.7.504(b) whenever there a request to deeply scan these files, paths or folders. My KS main active user preferences and password access were working. Now with the automático upgrade from KS 21.25 to KS 21.26 instead on showing the annoyance of viruses scans not being registered or saved upon finishing. This time is with KS active user password not working to permit access to deeply scan these protected paths, files or folders. I might up having to do against my will to uninstall KS 21.26 de to another bug from these automatic convertions or upgrades. I am also updating that someone have highlighted these changed only occur every 3 months. KS 21.25 was release 05/20 and KS 21.26 in 07/31. Accordinly to this interval happened in a shorter time. There has to be a term in allowing to keep a bug free without deffects KS service instead of opting to receive these upgrades or convertions. -
Psiu47 replied to Psiu47's topic in Kaspersky: Basic, Standard, Plus, PremiumSo I've took It took a long pause to wait when the next upgrade would release and I would be needed to do another uninstallment to fix such problems I've listed. Tonight Kaspersky Standard started updating onto version Kaspersky Standard 21.26.4.406 and by so Far viruses scans fone by quick mouse action promp menu, and 'selective' are being saved and registered in the report page. However I've initiated two times 'Vulnerability scan' and upon finishing. It was not registered in the report page among others scans I've been doing quickly to test. I am initiating 'Quick scan' and so Far the progression have going untill It have started to ask me to enter a password to verify protected paths. Last version have never asked me to do such things why is It now and why I can't mark all of these files to verified deeply without asking me to? This procedure to request a password is weird. So far I am managing this upgrade without having to uninnstal the sevice and install back. This request to verify protected files was never asked before in previous versions. Why now? KS 21.26 is respectively using KS 21.25 user programing, and I have certified to check in nothing was changed which didn't so why would be asking now for password to scan usual paths, folder and files always existed for years before.
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Heineken replied to Heineken's topic in Virus and Ransomware related questionsThank you so much for your quick help! I'll wait for the analysts' verdict. Please let me know if you need any further verification from my side. -
Perchera replied to secret's topic in Kaspersky: Basic, Standard, Plus, PremiumIA estimates 2 to 6 million users have windows arm64 based devices, i guess it's not enough for Kaspersky to launch it -
Qenix replied to HuiY's topic in 家用产品支持I uninstalled Kaspersky. You report a problem, and they say they're looking into it. I don't think anyone actually looks into it. I've been using it for 4 years. It's always like this. There's a problem, but there's no quick action option. Even if you add an exception, the problem isn't solved. Once you've resolved the issue, please send an email.... I won't use it anymore after the license expires. -
MahmudBeard posted a topic in Virus and Ransomware related questionsURL: https://incoso.co.za/ This is a false positive. incoso.co.za is the legitimate website of INCOSO (Inhouse Conference Solutions), an established South African event-management company operating since 2007, based in Bellville, Western Cape. The site contains standard business content only: company profile, services, portfolio, testimonials, and a basic name/email contact form. It has no login area, no password fields, and no payment processing, so there is no phishing surface. We believe the detection originated from Avast Web Shield running on the machine of the web administrator who deployed the site. During go-live there was a brief window before the site was fully configured and secured, and we believe Avast automatically sampled the site in that state and submitted it to your cloud database, classifying it before the finished, live site existed. The live production site has been complete and secure since launch. Avast/AVG is flagging both the homepage and favicon.ico as "URL:Phishing." No other reputation service lists this domain. Please re-scan the current live site and remove the classification. Site owner contact available on request.
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Hallo @Xzz123, Thank you for the quick response. MfG Tschekker Windows11 Pro, Version 25H2: KB5089549 Kaspersky Premium: 21.25.7.504(a) Kaspersky Passwort Manager: 25.1.0.602 (a) Kaspersky VPN: 21.25.7.504-2 -
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Kathryn Rance posted a topic in Kaspersky: Basic, Standard, Plus, PremiumCannot remove keyboard from screen. -
markinson replied to markinson's topic in Kaspersky Anti-Ransomware ToolDear Andrey, thank you so much for your invaluable help! First, following your suggestion, I completely removed Avast Free Antivirus and restarted my computer. Then, using Kaspersky's removal tool, I also uninstalled KART 6.6 and restarted my computer. I encountered no problems during this process. I then installed KART 14 for business, and the installation process was successful. I waited a bit after the installation was complete until the "K" icon appeared in the taskbar near the clock. I then, without doing anything else, restarted my computer. The restart was quick, and I immediately entered Windows, without any slowdowns or problems. The "K" icon loaded properly. I even shut down and restarted my computer several times, without encountering any slowdowns or problems. I haven't reinstalled Avast yet, but I fear that the problem may be caused by the coexistence, at least on my computer, of these two programs, even though I had previously disabled the control of one in their respective settings. Thanks again! I'll try reinstalling Avast Free (now Avast One) later... -
AlphariusXXI posted a topic in Virus and Ransomware related questionsThis is the second time I've encountered a problem with a quick check, the first time, during a quick check, some red object was found that was simply ignored, not deleted, not quarantined, but simply ignored, subsequent quick scans and 2 full scans did not detect any viruses that day. Today, a quick scan detected two objects that were deleted. It's unclear what these objects were; there's no indication they were even detected in the history, and they weren't quarantined so I cannot see what objects kaspersky deleted, the full scan I ran afterwards found nothing. Moreover, this behavior of the antivirus began after a recent update; I had never had anything like this before. -
SonicMasadas replied to SonicMasadas's topic in Virus and Ransomware related questionsThank you so much for your support and quick response. -
Fr_Parisien replied to Support_PC's topic in Kaspersky Virus Removal ToolAh... That's a shame, because only Malwarebytes works with WinPE. Thanks for the quick reply anyway :-) -
Neijek replied to Salvo63's topic in Utenti privatiQuick update, still not fixed. @kaspersky any fix inc? -
teardrop posted a topic in Kaspersky: Basic, Standard, Plus, PremiumHello, when I checked my Safe Browsing reports, I found these svchost.exe marked as object corrupted. I ran a quick scan and a full scan, but found no threats. Should I be alarmed or is this just a false positive? I am using Windows 11 version 25H2 and Kaspersky Premium version 21.25.7.504
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PoisonMug replied to CK1's topic in Kaspersky: Basic, Standard, Plus, PremiumThis freezing issue, where quick and full scans hang at 1% and fail to progress, is caused by Windows 11 update KB5083631. Once uninstalled, Kaspersky scans return to normal. For now, the only workaround to resolve the problem is to remove KB5083631 from the system, disable automatic updates, and wait the company investigate the system changes introduced by this KB that are affecting scans and release a fix or update. Alternatively, we may have to wait for Microsoft to release a Windows patch if the issue remains unresolved on their end. -
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CK1 replied to CK1's topic in Kaspersky: Basic, Standard, Plus, PremiumJust wanted to post back that this resolved the issue I was having, apologies for the delayed reply, I had to use the system uninterrupted for a couple of day so wasn't able to troubleshoot until today and this update happened before I was able to test further, enabling memory testing on quick scan and background scans seem to be working as intended, I haven't had the chance to run a full scan as of yet but I don't imagine the result would be different. Thank you again all for your assistance everyone. -
CK1 replied to CK1's topic in Kaspersky Internet SecurityJust wanted to post back that this resolved the issue I originally ran into, thanks again for the assistance, I did unfortunately run into other issues after the switch which I asked about in a separate thread here (https://forum.kaspersky.com/topic/full-scan-quick-scan-stays-at-1-fixed-58770/) but these have also been solved by a new update.
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Try to disable those settings, reboot the system en try a K. Quick Scan.
