Google Drive Users Report Loss of Months' Worth of Data

Google is investigating the issue, which appears to affect a subset of desktop users, but the root cause remains unknown.

Google Drive users have reported the loss of months' worth of data, with some files dating back to May 2023 disappearing from the cloud storage service.
Google has acknowledged the issue and is currently investigating, but the root cause remains unknown.
The issue seems to affect a 'limited subset' of Google Drive for desktop users, specifically those using versions 84.0.0.0 through 84.0.4.0.
Google has advised users not to disconnect their accounts or delete or move the app data folder while the investigation is ongoing.
Many users have reported that the lost data is critical and work-related, and attempts at recovery have so far been unsuccessful.