Medium
Operating Systems
✓ Solution Verified by Community (0+ upvotes)
How to fix error error-lost-writebehind-data-network-disconnected in Windows 11
ERROR_LOST_WRITEBEHIND_DATA_NETWORK_DISCONNECTED = 788
Fix based on community reports and expert analysis. Last verified: 2026-08-12
· How we verify fixes
| Error Code | error-lost-writebehind-data-network-disconnected |
|---|---|
| Affected System | Windows 11 (Microsoft) |
| Difficulty | Medium |
| Estimated Time | 20 min |
| Requires Admin Rights | ⚠️ Yes |
Solution Steps
- 1 Press Windows key + R, type 'devmgmt.msc', and press Enter. Expand 'Disk drives' and find your network drive (it may show as a local disk).
- 2 Right-click the drive and select 'Properties'. Go to the 'Policies' tab. Check 'Enable write caching on the device' and 'Turn off Windows write-cache buffer flushing on the device' (if available). This can reduce data loss but may increase risk of corruption if power fails.
- 3 Alternatively, uncheck 'Enable write caching' to ensure data is written immediately, but this may slow performance.
- 4 Ensure your network connection is stable. Use a wired connection if possible.
- 5 If using a mapped drive, consider using a VPN or a more reliable network protocol like SMB3.
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