Kaspersky Internet Security and Anti-Virus are highly popular and well respected commercial security products and a recommended choice if you prefer more functions and protection than a offers. We’ve also previously shown you how to get a completely free.

Digital signature is invalid or missing SketchUp has a digital signature imprint from Verisign, so if you receive a message that there is an invalid digital signature or no digital signature, the likely cause is that installation file was corrupted during download.

Once drivers have been installed reboot.

A major issue with most security software has always been they rarely uninstall themselves cleanly from your computer and can also have issues on installation as well because they need to hook deep into your system. Kaspersky Antivirus and Internet Security products have commonly suffered with an error during the setup process which prevents install and asks for a reboot to continue.

After restarting, the problem remains: Installation interrupted Installation ended prematurely because of an error. Although it isn’t as prevalent as a few years back, people still encounter the error and obviously making sure you succeed in getting your paid protection working is important. Here we show you a selection of solutions we have found to get around this error and allow your Kaspersky product to continue its installation. This applies to all versions of Kaspersky Internet Security and Antivirus, and possibly PURE.

A Leftover Registry Key There is a registry key which can be created when uninstalling an older version of Kaspersky and for some reason this key gets left behind after a reboot. You need to remove a key called avp**_post_uninstall from your registry. The ** corresponds to a version number of Kaspersky which never removed the key.

Just follow the simple steps below to remove the key from the registry. Hold Win key+R or go to Start -> Run, type regedit and click OK. Navigate to: HKEY_LOCAL_MACHINE SOFTWARE Microsoft Windows CurrentVersion Run 3. Expand Run and look for a registry key avp**_post_uninstall. For example, you might find one called avp12_post_uninstall. Right click on the avp**_post_uninstall key and select Delete.

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Now try to install the Kaspersky product as normal and hopefully the error message has disappeared during install. This is a quick and simple fix and worth checking, even if you’re sure you haven’t installed Kaspersky previously.

Note that this registry key won’t show up in most startup tuning tools such as or Glary Utilities and needs to be checked manually. Traces of a Previous Security Package One of the most common causes for the “Installation ended prematurely because of an error” message is the Kaspersky setup has found traces from another security package that is getting in the way and stopping the installation going any further. Although Kaspersky products have recently been much better at detecting these issues, they can still cause the install process to fail.

If you know what security package(s) you’ve had installed before It’s quite easy to use a removal tool to clear up any leftovers from a previous antivirus package if you know what’s been installed. Download and run the tool for each brand you’ve had installed on the computer, this also includes previous versions of a Kaspersky product. We have a where you can download and run individual removal tools. Kaspersky also have their own with similar tools and recommendations. If you don’t know what’s been installed before If you have no idea what security software has been installed before, you obviously can’t download and run a specific removal tool. Thankfully a program called AppRemover is able to detect and including the most popular of Norton, McAfee, Bitdefender, Eset, AVG, Avira, Avast and of course Kaspersky. And wait for the results of the system scan.