Kaspersky Lab apologized following a flawed anti-malware update that went out in February for its Endpoint Security product and caused serious disruptions in enterprise networks. "Customers have reported issues that include: long log-in times; slow launch of third-party applications, unavailability of Kaspersky icon in tray and, in rare cases, Internet Explorer crashing. The problem is affecting random machines running Windows XP SP3, Windows Vista and Windows 7 operating systems with Kaspersky Endpoint Security 8 for Windows 18.104.22.1681 installed. These issues are an unacceptable inconvenience and burden to the productivity of our customers but they do not affect the security of their systems." Unfortunately, follow-up patches also caused problems, leading Kaspersky to again “apologize for any inconvenience caused."