In this guide we will show how we tried to install Kaspersky Internet Security 2014 in Windows 8.1 OS. Unfortunately, KIS 2014 setup file is not support Windows 8.1, but in a nearest months, we know, that the Kaspersky Laboratory will include Windows 8.1 OS support. Additionally, we want to say, that Kaspersky Internet Security is the one of greatest PC security product on the market, and when the Windows 8.1 OS support will be officially presented, we will show successful installation guide in our blog.

Applies to Kaspersky PURE 2.0 If the following message is displayed on the screen when working with the program ' Digital signature is either missing or corrupted', perform the following actions: 1. Check access to the Internet To resolve the situation, check if you have Internet access, using the web browser Internet Explorer. If you do not have access to the Internet, contact your ISP for details. Try to once again after access to the Internet is restored. Configure Firewall correctly If Firewall is installed on your computer, make sure that an allowing rule is created for the process avp.exe in the Firewall settings. Firewall secures your computer protection on local networks and Internet. Firewall is a program which monitors data transferred via Internet or local networks.

Kaspersky error digital signature on KSOS Source Step #1: Check the authenticity of the downloaded installer and re-download Kaspersky from Kaspersky site. Enchantment Utopia Raritan here. You may download the latest version from the lists below. Doesn't install on my Gene V. Keep getting error while. Support, Guides, Advice >PC Components >Other Series Motherboards >Kaspersky Missing Digital Signature. If the message 'Digital signature missing, corrupted, or does not match the Kaspersky Lab digital signature' is displayed on the screen when activating Kaspersky.

According to the Firewall settings, it blocks or allows data transferring. Check system date on your computer You can find detailed instructions on how to check whether the system date is set correctly in KB7662.

Repeat the activation attempt in an hour If the recommendations described above did not help to resolve the problem, try to activate the application later (in about 15 minutes): • • 5. Contact Kaspersky Lab Technical Support If the error keeps repeating, create a request to Kaspersky Lab Technical Support via the service. Describe your problem in all details.