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Update: Recently started getting reports from people on Yosemite getting this same generic error message. Dig some digging and found this discussion. On 30 Jan, Google dropped support for Yosemite and older macOS versions. The error message in this scenario should be more helpful, i.e. "Sorry, older versions of macOS including Yosemite (10.10) is no longer supported by File Stream. Please upgrade to latest macOS or switch to Backup & Sync".
- Windows: Windows 7 and up. Windows Server editions are not supported.
- Mac: El Capitan (10.11) and up. For High Sierra (10.13), follow the steps below.
At this stage Backup & Sync works with Mountain Lion (10.8) and higher, or Windows 7 and higher.
For macOS High Sierra (10.13):
- Open Drive File Stream.
- At the top left, go to System Preferences Security & Privacy.
- Next to "System software from developer "Google, Inc." was blocked from loading," click Allow.
Same "encountered a problem" error still?
- Quit the Drive File Stream app from the top applications bar
- Hit command+space
- Type ~/Library/Application Support/Google
- Rename DriveFS to anything you'd like
- Start the Drive File Stream app
- Quit Google Chrome. If unresolved, restart Mac.
For the reason as to why this error takes place, if you look through the logs located in that DriveFS folder, you'll see the app tries to re-establish streams to files. In our case, there were corrupted streams. By renaming or deleting the DriveFS folder, it forces the Drive File Stream app to recreate the folder and all cache streams.
If you're having trouble with the other Google Drive software, Backup & Sync, learn how to fix problems syncing to your computer.
Credit answer to thehouseofho and Chris Mayell in comments.