Excel突然丢失为“标准应用程序”（可能在更新后）。尽管我将xlsx文件与Excel相关联，但它不会在Windows设置下的标准应用程序窗口中显示：
As a result, opening Onedrive Excel files via a browser using the option "Open in Excel" does not work anymore. e.g. in Firefox I can not choose Excel to open the files (I only get the option to choose Openoffice or the app store). If I associate Onedrive Excel files directly with Excel (C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE) (Office 365), Excel opens but without loading the file from Onedrive. I get a general error message that the file can not be opened. Opening the file through Excel manually works fine (I can access the one drive folder via the open file dialog).
我尝试了标准解决方案，例如修复，卸载和重新安装Office，包括使用了无济于事的删除工具。我在另一个运行良好的系统上厌倦了整个过程。
有什么想法可以在其他地方找到或尝试什么？
