+| 0x80070001 | -2147024895 | ERROR_INVALID_FUNCTION | The file failed to tier because the cloud tiering filter driver (*storagesync.sys*) isn't running or because the file has an extension of `.sid`. | Security identifier (.sid) files can't be read by the storage sync service, so they can't be tiered to the cloud. If the file doesn't have an extension of `.sid`, you can resolve this issue by opening an elevated command prompt and running the following command: `fltmc load storagesync`<br/>If the Azure File Sync filter driver fails to load when running the `fltmc` command, uninstall the Azure File Sync agent, restart the server, and reinstall the Azure File Sync agent. |
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