can anybody tell me why ...
Welcome. Check system date/time correct, then Settings > Update > Settings > Proxy server > uncheck proxy server > ok>ok. If still no go, attach the update report.
Lower right of Kaspersky window, Reports > upper left, drop down > Update, then upper right Save, save it somewhere and attach it to your next post.
If the file is too large to upload, then zip it (right click, send to > compressed zipped folder) and upload the zip.
Please post your GetSystemInfo report link, instructions are located in the sixth Important topic. wolf70
, It can't update when the PC is off, and it will update 15 minutes after the PC is turned on.