1. Run the sfc /scannow tool for scanning system files. For instructions, see the Microsoft website. It will check the integrity of all Windows system files and try to recover the corrupted files and fix the errors, if detected. After the files are recovered and the errors are fixed, run the installation of Kaspersky Endpoint Security for Windows once again.
2. If a third-party data protection software is installed on the device, update the software to the latest version.
3. Download the latest version of a Kaspersky application distribution package. Restart the device and retry installing/uninstalling the application.

1. Make sure that:
   • The application is being installed/uninstalled under an administrator account.
   • No third-party software is installed on your device that may restrict your permissions or prevent the installation and launching of applications.
   • It is possible to remove the application locally without using Kaspersky Security Center.
   • Base Filtering Engine is present in the system on the device and running.
   • You have checked group policies settings (GPO). Or move the device to a container (OU) without active policies and force applying the settings. For details, see this article.
2. Run the sfc /scannow tool for scanning system files. For instructions, see the Microsoft website. It will check the integrity of all Windows system files and try to recover the corrupted files and fix the errors, if detected. After the files are recovered and the errors are fixed, run the installation of Kaspersky Endpoint Security for Windows once again.
3. If a third-party data protection software is installed on the device, update the software to the latest version.
4. Download the latest version of a Kaspersky application distribution package. Restart the device and retry installing/uninstalling the application. 
5. If at the time of installation Kaspersky Endpoint Security for Windows is present on your computer or the program is being uninstalled, use the recommendations below and try again:
   • Stop Kaspersky Endpoint Security for Windows using Kaspersky Security Center by clicking Stop in the left frame of the remote diagnostics utility. See the Online Help page for instructions. You can also stop the program locally on an endpoint device by unloading Kaspersky Endpoint Security for Windows from RAM. To do this, right-click the application icon in the notification area and then click Exit. See the Online Help page for instructions.
   • Disable Kaspersky Endpoint Security for Windows Self-Defense in the properties of the policy applied to the target device or locally using the application interface. See the Online Help page for instructions.
   • Disable password protection. See the Online Help page for instructions.

1. Make sure that:
   • The application is being installed/uninstalled under an administrator account.
   • No third-party software is installed on your device that may restrict your permissions or prevent the installation and launching of applications.
   • It is possible to remove the application locally without using Kaspersky Security Center.
   • Base Filtering Engine is present in the system on the device and running.
   • You have checked group policies settings (GPO). Or move the device to a container (OU) without active policies and force applying the settings. For details, see this article.
2. If a third-party data protection software is installed on the device, update the software to the latest version.
3. Download the latest version of a Kaspersky application distribution package. Restart the device and retry installing/uninstalling the application.
4. Stop Kaspersky Endpoint Security for Windows using Kaspersky Security Center by clicking Stop in the left frame of the remote diagnostics utility. See the Online Help page for instructions. You can also stop the program locally on an endpoint device by unloading Kaspersky Endpoint Security for Windows from RAM. To do this, right-click the application icon in the notification area and then click Exit. See the Online Help page for instructions.
5. Disable Kaspersky Endpoint Security for Windows Self-Defense in the properties of the policy applied to the target device or locally using the application interface. See the Online Help page for instructions.
6. If Kaspersky Endpoint Security for Windows is damaged and you want to restore it, in the command line run the restore command according to the version of the application. If necessary, request the installation package of the required application version for which full support is available. To do so, submit a request via CompanyAccount.
   • For 12.2.0:
     

     msiexec /i {B524FBEF-035B-455E-AA3A-2ABA729C62F8} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 12.1.0:
     

     msiexec /i {D8E156BC-0E64-47F7-8E4F-0DCD80F2A6D3} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 12.0.0:
     

     msiexec /i {E70CCFE8-163C-4E2B-BC36-61B747DAD590} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.11.0:
     

     msiexec /i {BF39B547-8E24-4E11-8179-183B2F7C83EB} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.10.0:
     

     msiexec /i {305A9EC9-294E-4555-A7C5-E1C767E01C11} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.9.0:
     

     msiexec /i {6BB76C8F-365E-4345-83ED-6D7AD612AF76} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.8.0:
     

     msiexec /i {1F39E63E-3F9C-4E21-928B-136C6362E88B} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.7.0:
     

     msiexec /i {F4ECE08F-50E9-44E2-A2F3-2F3C8DDF8E16} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.6.0:
     

     msiexec /i {7EC66A9F-0A49-4DC0-A9E8-460333EA8013} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.5.0:
     

     msiexec /i {7B437856-99E3-4F01-B31C-B5A26465C633} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.4.0:
     

     msiexec /i {AF1904E7-A94C-4F4C-B3B7-EC54D7429DA2} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.3.0: ;
     

     msiexec /i {192DE1DE-0D74-4077-BC2E-A5547927A052} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.2.0:
     

     msiexec /i {9A017278-F7F4-4DF9-A482-0B97B70DD7ED} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • Fill in the fields KLLOGIN and KLPASSWD and specify the path to the log file.
7. Run the sfc /scannow tool for scanning system files. For instructions, see the Microsoft website. It will check the integrity of all Windows system files and try to recover the corrupted files and fix the errors, if detected. After the files are recovered and the errors are fixed, run the installation of Kaspersky Endpoint Security for Windows once again.

If the maximum number of filtering devices which are supported by the operating system is reached, make changes to the registry key.

1. Press +R on the keyboard or type Run in the search box of the taskbar.
2. Type redegit and click OK.

3. Open the registry branch HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network.
4. Right-click on the empty area. In the context menu select New → DWORD (32-bit) Value.

5. Specify the parameter name as MaxNumFilters: right-click the value and select Modify in the context menu.

6. Select the check box Decimal in the Base block and specify 20 in the Value data field.

7. Click ОК.
8. Close the Registry Editor tool.
9. Restart your computer.

1. Download the latest version of a Kaspersky application distribution package. Restart the device and retry installing/uninstalling the application.
2. If a third-party data protection software is installed on the device, update the software to the latest version.
3. Make sure that:
   • The application is being installed/uninstalled under an administrator account.
   • No third-party software is installed on your device that may restrict your permissions or prevent the installation and launching of applications.
   • It is possible to remove the application locally without using Kaspersky Security Center.
   • Base Filtering Engine is present in the system on the device and running.
   • You have checked group policies settings (GPO). Or move the device to a container (OU) without active policies and force applying the settings. For details, see this article.
4. Run the sfc /scannow tool for scanning system files. For instructions, see the Microsoft website. It will check the integrity of all Windows system files and try to recover the corrupted files and fix the errors, if detected. After the files are recovered and the errors are fixed, run the installation of Kaspersky Endpoint Security for Windows once again.
5. Disable Kaspersky Endpoint Security for Windows Self-Defense in the properties of the policy applied to the target device or locally using the application interface. See the Online Help page for instructions.
6. Disable password protection. See the Online Help page for instructions.
7. If Kaspersky Endpoint Security for Windows is damaged and you want to restore it, in the command line run the restore command according to the version of the application. If necessary, request the installation package of the required application version for which full support is available. To do so, submit a request via CompanyAccount.
   • For 12.1.0:
     

     msiexec /i {D8E156BC-0E64-47F7-8E4F-0DCD80F2A6D3} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 12.0.0:
     

     msiexec /i {E70CCFE8-163C-4E2B-BC36-61B747DAD590} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.11.0:
     

     msiexec /i {BF39B547-8E24-4E11-8179-183B2F7C83EB} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.10.0:
     

     msiexec /i {305A9EC9-294E-4555-A7C5-E1C767E01C11} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.9.0:
     

     msiexec /i {6BB76C8F-365E-4345-83ED-6D7AD612AF76} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.8.0:
     

     msiexec /i {1F39E63E-3F9C-4E21-928B-136C6362E88B} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.7.0:
     

     msiexec /i {F4ECE08F-50E9-44E2-A2F3-2F3C8DDF8E16} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.6.0:
     

     msiexec /i {7EC66A9F-0A49-4DC0-A9E8-460333EA8013} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.5.0:
     

     msiexec /i {7B437856-99E3-4F01-B31C-B5A26465C633} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.4.0:
     

     msiexec /i {AF1904E7-A94C-4F4C-B3B7-EC54D7429DA2} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.3.0:
     

     msiexec /i {192DE1DE-0D74-4077-BC2E-A5547927A052} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • For 11.2.0:
     

     msiexec /i {9A017278-F7F4-4DF9-A482-0B97B70DD7ED} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

   • Fill in the fields KLLOGIN and KLPASSWD and specify the path to the log file.

The error 27374 “The application is upgrading. Please try again later.” may occur if during the update of Kaspersky Endpoint Security for Windows you try to interact with it, for example, by removing, modifying or installing patches.

If the error occurs, wait until the update is complete and repeat the intended actions (remove, modify, install patches, etc.)

If after 24 hours the issue persists, submit a request to Kaspersky technical support via Kaspersky CompanyAccount. Please include a detailed description of the issue. In your request, provide an archive with the following:

• Kaspersky Get System Info report with the Include Windows event logs option enabled, collected on the machine on which the issue occurs. For instructions, see this article.
• The error screenshot.

1. Run the sfc /scannow tool for scanning system files. For instructions, see the Microsoft website. It will check the integrity of all Windows system files and try to recover the corrupted files and fix the errors, if detected. After the files are recovered and the errors are fixed, run the installation of Kaspersky Endpoint Security for Windows once again.
2. If a third-party data protection software is installed on the device, update the software to the latest version.
3. Download the latest version of a Kaspersky application distribution package. Restart the device and retry installing/uninstalling the application.

If the solution didn't help, use the kavremover tool. Run the kavremover tool in safe mode only if:

• Removal of the previously installed application has been completed with an error
• There are other indirect signs of the removal issues. For example, the operating system works incorrectly after uninstalling the application.
• Upgrading the application terminates with an error.

After using the kavremover tool, restart the device and retry installing the application.

If at the time of installation Kaspersky Endpoint Security for Windows is present on your computer or the application is being uninstalled:

1. Disable password protection according to the instructions.
2. Disable Self-Defense of Kaspersky Endpoint Security for Windows locally via the application interface or through the properties of the policy applied to the target device using the instruction.
3. Stop Kaspersky Endpoint Security for Windows:
   • Using Kaspersky Security Center. To do so, click Stop in the left frame of the remote diagnostics utility.
   • Locally on an endpoint device by unloading Kaspersky Endpoint Security for Windows from RAM. To do this, right-click the application icon in the notification area and click Exit.
4. Retry installing or removing the application once again.

If the error occurs in silent mode, make sure you have accepted the terms of the End User License Agreement and Privacy Policy. In New Package Wizard, the parameters EULA=1 and PRIVACYPOLICY=1 should be entered in the field Executable file command line (optional). For details, see Online Help and the article.

In case Kaspersky Endpoint Security for Windows is present on your computer or the application is being uninstalled

If at the time of installation Kaspersky Endpoint Security for Windows is present on your computer or the application is being uninstalled:

1. Disable password protection according to the instructions.
2. Disable Self-Defense of Kaspersky Endpoint Security for Windows locally via the application interface or through the properties of the policy applied to the target device using the instruction.
3. Stop Kaspersky Endpoint Security for Windows:
   • Using Kaspersky Security Center. To do so, click Stop in the left frame of the remote diagnostics utility.
   • Locally on an endpoint device by unloading Kaspersky Endpoint Security for Windows from RAM. To do this, right-click the application icon in the notification area and click Exit.
4. Retry installing or removing the application once again.

In case Kaspersky Endpoint Security for Windows is damaged

If Kaspersky Endpoint Security for Windows is damaged and you want to restore it, in the command line run the restore command for the version of your application. Before running the command, fill in the fields KLLOGIN and KLPASSWD and specify the path to the log file.
If necessary, send a request via Kaspersky CompanyAccount and ask for the installation package of the required application version for which support is available.

• For 12.1.0:
  

  msiexec /i {D8E156BC-0E64-47F7-8E4F-0DCD80F2A6D3} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 12.0.0:
  

  msiexec /i {E70CCFE8-163C-4E2B-BC36-61B747DAD590} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.11.0:
  

  msiexec /i {BF39B547-8E24-4E11-8179-183B2F7C83EB} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.10.0:
  

  msiexec /i {305A9EC9-294E-4555-A7C5-E1C767E01C11} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.9.0:
  

  msiexec /i {6BB76C8F-365E-4345-83ED-6D7AD612AF76} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.8.0:
  

  msiexec /i {1F39E63E-3F9C-4E21-928B-136C6362E88B} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.7.0:
  

  msiexec /i {F4ECE08F-50E9-44E2-A2F3-2F3C8DDF8E16} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.6.0:
  

  msiexec /i {7EC66A9F-0A49-4DC0-A9E8-460333EA8013} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.5.0:
  

  msiexec /i {7B437856-99E3-4F01-B31C-B5A26465C633} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.4.0:
  

  msiexec /i {AF1904E7-A94C-4F4C-B3B7-EC54D7429DA2} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.3.0:
  

  msiexec /i {192DE1DE-0D74-4077-BC2E-A5547927A052} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

• For 11.2.0:
  

  msiexec /i {9A017278-F7F4-4DF9-A482-0B97B70DD7ED} KLLOGIN=<login> KLPASSWD=<password> REINSTALL=ALL REINSTALLMODE=amus EULA=1 PRIVACYPOLICY=1 SKIPREBOOTPENDING=1 /lv*x path_to_log_file.txt /qn

Wait for the application to upgrade. If the error occurs, restart your PC and run the application again. 

If you are using Kaspersky Endpoint Security version 11.11 and below, install the latest updates via Kaspersky CompanyAccount. You also can submit a request to Technical Support through Kaspersky CompanyAccount.

Make sure the Fast Boot is disabled and the device does not go to sleep mode.

If the issue persists, use these tips and submit a request to Kaspersky Technical Support via Kaspersky CompanyAccount.