.NET 3.5 apps broken, Trend Micro stops scanning

The May preview update continued the .NET Framework 3.5 application massacre — apps that depended on the framework simply refused to open. Trend Micro antivirus scans failed, leaving users who paid for third-party security software unprotected. SteelSeries GG, the gaming peripheral software, broke. Installation failures were common. Microsoft had been shipping .NET 3.5-breaking updates for months by this point, apparently unable to test against a framework they built and shipped with the operating system.