在 Revit 2020 和 Revit LT 2020 的某些版本中，存在 Revit 会话意外以 运行的已知故障。此模式下的限制包括：无法保存或另存为任何文件；无法导出或发布已修改的项目；无法将项目导出为包含可修改模型数据的任何格式；以及无法在更改后打印项目。最关键的是，此故障发生时 不显示查看器模式警告对话框 ，导致用户可能未意识到自己正处于受限的查看状态。
This comprehensive guide covers everything you need to know about the Revit 2020.2.9 hotfix—from what it is and why it's important, to step-by-step instructions for installing it. What is the Revit 2020.2.9 Hotfix? revit 2020.2.9 hotfix
: Resolves a defect in the 2020.2 engine that silently dropped long-standing family data from workshared central files during saving cycles. 在 Revit 2020 和 Revit LT 2020 的某些版本中，存在