If the Multi-targeting Pack is not installed, the C# language service crashes when you try to load a project. If the Release Management update installation fails, you will be unable to restart the update or roll back to the earlier version of Release Management without performing a restore operation. https://ifema83727.blogdeazar.com/35950692/2-минутный-Правило-поставщик-выставочных-стендов-ИФЕМА