Kaspersky Antivirus has been replaced with UltraAV for U.S. users, with the software being deleted from computers and the new company’s software installed. Some customers aren’t happy with the change. The company has removed its antivirus software from computers across the United States following the federal sanction in June. This is a response to the US Government ban on all cybersecurity and anti-virus products from Russian-based Kaspersky Lab. According to posts from Reddit users, the switchover began last Thursday.