Microsoft issues advice for people with Storage Spaces problems in Windows 10 May 2020 Update
If you thought the problems associated with upgrading to Windows 10 May 2020 Update were over, think again. Microsoft has acknowledged an issue with some Storage Spaces configurations with Windows 10 and Windows Server version 2004 installed.
Microsoft says that some users may experience problems accessing Storage Spaces, and warns that partitions may show up in Disk Manager in RAW format. There is an important warning for anyone affected by the issue, as well as some advice about what steps to take.