Kaspersky for Windows release notes
Optimal protection for Windows
- Kaspersky for Windows (version 21.9.6.465)
- Kaspersky for Windows (version 21.8.5.452c)
- Kaspersky for Windows (version 21.8.5.452b)
- Kaspersky for Windows (version 21.8.5.452a)
- Kaspersky for Windows (version 21.8.5.452)
- Kaspersky for Windows (version 21.7.7.393b)
- Kaspersky for Windows (version 21.7.7.393a)
- Kaspersky for Windows (version 21.7.7.393)
- Kaspersky for Windows (version 21.6.7.351a)
- Kaspersky for Windows (version 21.6.7.351)
- Kaspersky for Windows (version 21.5.11.384d)
- Kaspersky for Windows (version 21.5.11.384c)
- Kaspersky for Windows (version 21.5.11.384b)
- Kaspersky for Windows (version 21.5.11.384a)
- Kaspersky for Windows (version 21.5.11.379)
Patch C for version 21.8.5.452
Patch C for Kaspersky for Windows version 21.8.5.452 was released on January 18, 2023.
In patch C, we have fixed several application issues.
To install the patch:
- Run a database update in Kaspersky for Windows. See the Online Help page for instructions.
- Restart the computer once the updates have been installed.
The patch will be installed. To check if the patch was installed successfully, open the application window and click 
in the lower-left corner. The information about the application version will be available in the window that opens. The version number will have the letter c added.
If the patch wasn't installed, wait for a few days. The patch is distributed gradually.
To complete the patch installation successfully, computer reboot is required. If you don't reboot the computer in seven days after the application receives the patch, the icon on the Windows taskbar will turn red.
Patch B for version 21.8.5.452
Patch B for Kaspersky for Windows version 21.8.5.452 was released on December 13, 2022.
In patch B, we have fixed several application issues.
Patch A for version 21.8.5.452
Patch A for Kaspersky for Windows version 21.8.5.452 was released on November 28, 2022.
In patch A, we have fixed several application issues.
Patch B for version 21.7.7.393
Patch B for Kaspersky for Windows version 21.7.7.393 was released on January 18, 2023.
In patch B, we have fixed several application issues.
To install the patch:
- Run a database update in Kaspersky for Windows. See the Online Help page for instructions.
- Restart the computer once the updates have been installed.
The patch will be installed. To check if the patch was installed successfully, open the application window and click in the lower-left corner. The information about the application version will be available in the window that opens. The version number will have the letter b added.
If the patch wasn't installed, wait for a few days. The patch is distributed gradually.
To complete the patch installation successfully, computer reboot is required. If you don't reboot the computer in seven days after the application receives the patch, the icon on the Windows taskbar will turn red.
Patch A for version 21.7.7.393
Patch A for Kaspersky for Windows version 21.7.7.393 was released on August 29, 2022.
In patch A, we have fixed several application issues.
Patch A for version 21.6.7.351
Patch A for Kaspersky for Windows version 21.6.7.351 was released on January 18, 2023.
In patch A, we have fixed several application issues.
To install the patch:
- Run a database update in Kaspersky for Windows. See the Online Help page for instructions.
- Restart the computer once the updates have been installed.
The patch will be installed. To check if the patch was installed successfully, open the application window and click in the lower-left corner. The information about the application version will be available in the window that opens. The version number will have the letter a added.
If the patch wasn't installed, wait for a few days. The patch is distributed gradually.
To complete the patch installation successfully, computer reboot is required. If you don't reboot the computer in seven days after the application receives the patch, the icon on the Windows taskbar will turn red.
Patch D for version 21.5.11.384
Patch D for Kaspersky for Windows version 21.5.11.384 was released on January 18, 2023.
In patch D, we have fixed several application issues.
To install the patch:
- Run a database update in Kaspersky for Windows. See the Online Help page for instructions.
- Restart the computer once the updates have been installed.
The patch will be installed. To check if the patch was installed successfully, open the application window and click in the lower-left corner. The information about the application version will be available in the window that opens. The version number will have the letter d added.
If the patch wasn't installed, wait for a few days. The patch is distributed gradually.
To complete the patch installation successfully, computer reboot is required. If you don't reboot the computer in seven days after the application receives the patch, the icon on the Windows taskbar will turn red.
Patch C for version 21.5.11.384
Patch C for Kaspersky for Windows version 21.5.11.384 was released on March 28, 2022.
In patch C, we have fixed several application issues.
Patch B for version 21.5.11.384
Patch B for Kaspersky for Windows version 21.5.11.384 was released on February 21, 2022.
In patch B, we have fixed several application issues.
Patch A for version 21.5.11.384
Patch A for Kaspersky for Windows version 21.5.11.384 was released on February 7, 2022.
In patch A, we have fixed several application issues.
