Kaspersky
Question

klflt.sys failed - Windows 10 crashes (code: DRIVER_IRQL_NOT_LESS_OR_EQUAL) [merged]

  • 9 November 2020
  • 15 replies
  • 1772 views

Hi!

 

I would like to report this fail that occurs in a blue print as the title says:


Stop code: DRIVER_IRQL_NOT_LESS_OR_EQUAL

What failed: klflt.sys 

I’m home user and have found no informations about it. I tried to rename klflt.sys and kflt.sys in system32 to an “.old” file but it’s not allowed by Windows (saw this tip in a web page, but apparently only worked in Windwos Servers). Even I’m an user admin, I “have no SYSTEM permission” to rename these files.

 

I wouldn’t like to uninstall Kaspersky but I was forced to restart Windows already four or five times because this problem. Besides, the Windows informs that it’s collecting some datas and will restart, but I had to restart by holding power button. Someone could help? Any possible solution?

Brazilian Portuguese/Português Brasileiro:

Olá!

 

Eu gostaria de reportar essa falha, que ocorre numa tela azul como diz no título:
 

Código de parada: DRIVER_IRQL_NOT_LESS_OR_EQUAL

O que falhou: klflt.sys 

 

Eu sou um usuário doméstico e não encontrei informações sobre. Tentei renomear os klflt.sys e kflt.sys para um arquivo “.old” no system32, mas não foi permitido pelo Windows (vi essa dica numa página da web, mas aparentemente isso só funciona em Windows Servers). Mesmo eu sendo usuário admin, eu “não tenho permissão de SISTEMA” para renomear os arquivos.

 

Eu não gostaria de desinstalar o Kaspersky, mas já fui forçado a reiniciar o Windows quatro ou cinco vezes por causa desse problema. Além do Windows informar que está coletando dados e que reiniciará, mas eu tive que reiniciar segurando o botão power. Alguém poderia ajudar? Alguma solução possível?

 

System informations/Informações do sistema:

Windows 10 Home Single Language x64 / Samsung

Kaspersky Security Cloud 21.2.16.590 / 8, August, 2020, 15:24 (GMT -3)


15 replies

Userlevel 7
Badge +3

Hello!

Set the OS to collect full memory dump: https://support.kaspersky.com/common/diagnostics/12402

Reproduce the issue one more time.

Send the dump to Tech support: Create a request to Tech Support

Thanks!

Hello, I’ve been getting BSOD on win 10 with the following code :

Stop code: DRIVER_IRQL_NOT_LESS_OR_EQUAL

What failed: klflt.sys 

I did complete reinstall yet this happens. Is this error prevalent in this version of KIS because it didn’t happen before?

 

KIS version: Latest

Win version: 1942.685

Userlevel 7
Badge +9

Hello @ayan4u

Welcome!

Please let us know?

Thank you:pray_tone3:

Flood:whale: +:whale2:

Userlevel 7
Badge +3

Hi, 

Welcome.

1.make you sure that you have only one antivirus installed

2.run disk check (cmd with admin rights and write sfc /scannow

Screenshot post Please of result

Note between sfc and / is space

3.completely remove kaspersky after uninstall run https://support.kaspersky.com/common/uninstall/1464#block2

After this restart PC and install newest version of kaspersky.... 

Has there been any development on this front? I’ve had this this issue twice in two days, I’ve added crash control to the registry and will try do replicate the issue. I’m on amd 5600x

Userlevel 7
Badge +4

Welcome. Please follow the instruction located in the post directly above your post. 

 

Quote Anton Mefodys: 

“Hello!

Set the OS to collect full memory dump: https://support.kaspersky.com/common/diagnostics/12402

Reproduce the issue one more time.

Send the dump to Tech support: Create a request to Tech Support

Thanks!”

It just happened again, i created a support ticket but there are no options, to upload such huge files. My dmp file even zipped is 9,6gb. I will wait instructions from the support staff on how to upload the file

I’m having the same issue here. However, I have bought more than 120 licences to my company. Every notebook I install kaspersky, starts to crash with the same error our friend mentioned above.

Is there any updates about this?

Userlevel 7
Badge +9

It just happened again, i created a support ticket but there are no options, to upload such huge files. My dmp file even zipped is 9,6gb. I will wait instructions from the support staff on how to upload the file

Hello @rabanete218

Upload the data to any cloud service of your choice e.g. Google drive, Ice drive, One drive, Drop box, Mega drive, create a share link for the file, add the share link to your Incident request. 

Thank you:pray_tone3:

Flood:whale: +:whale2:

Userlevel 7
Badge +9

I’m having the same issue here. However, I have bought more than 120 licences to my company. Every notebook I install kaspersky, starts to crash with the same error our friend mentioned above. Is there any updates about this?

Hello @TARS TECNOLOGIA

Welcome!

Please follow the guidance provided above by @Anton Mefodys & @richbuff, prepare the data & log a request with Kaspersky Technical Support

Thank you:pray_tone3:

Flood:whale: +:whale2:

Stop code: DRIVER_IRQL_NOT_LESS_OR_EQUAL

What failed: klflt.sys 

It is a big problem for a lot of people ... This problem has preoccupied many users for a long time ... but unfortunately Kaspersky is not doing anything to solve it ...

Userlevel 7
Badge +3

Hello all

pease send a complete dump to me (via personal message). Thank you.

Hello. I have the same issue since I installed the Kaspersky Total Security. I'll try the the guidance provided above.

I'm having the same issue since I installed the Kaspersky Total Security. This is a big problem!

i have the same problem, send the dump file when the antivirus restart. but today crash  4times. i dont want to unistall but this problem have 2 months old and dont find how to fixit

Reply / Ответить