If it is about fixing the Kaspersky error code 27300 then in that case, it is advisable to get the Windows operating system updates installed after that also the user should get the windows system restore conducted, if you are still in need of any kind of further help or support then, in that case, the user should ask help from the experts at Kaspersky contact UK lines are open for help and support all the time.
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Make sure that you have downloaded the compatible version of the Kaspersky application.
If not, delete it and then download the Kaspersky antivirus application that is compatible with your computer’s OS.
You can use the Kavremover tool to remove or uninstall the incompatible version of the Kaspersky application.
If you have downloaded the Kaspersky antivirus that is compatible with your computer’s OS and this installation error occurs, then check if any other program is running in the background.
If so, close all the applications that are running in the background.
Perform the Kaspersky antivirus installation on your computer.
If the Kaspersky error 27300 persists, then restart your Windows computer in Safe Mode.
Regards, Bruce