Sync Fails Only With Large Files After Update?
Small files sync.
Large files don’t.
Nothing else changed.
This is not random.
Same app.
Same account.
Only large files fail.
This isn’t a sync failure.
It’s a size-triggered failure.
The App Works — Until Data Gets Bigger
The app is working correctly.
But only within limits.
- small data → completes instantly
- large data → fails mid-process
The difference is size.
What Actually Breaks
The transfer doesn’t finish.
- transfer stalls before completion
- request gets rejected mid-process
- connection drops during upload
Large requests take longer — and fail more easily.
So the app keeps trying.
But nothing completes.
Why It Started After the Update
The update changed how large data is handled.
- stricter request validation
- shorter timeout limits
- less tolerance for unstable transfers
Small data still passes.
Large data now fails.
Why There’s No Error
Because the failure is partial.
- no clear error message
- no visible failure state
- just no completion
So it looks like sync is working — but it isn’t finishing.
How to Confirm This
- small files sync normally
- large files never complete
- retrying gives the same result
If only large data fails, size is the trigger.
What Actually Fixes It
Reduce the load.
- split large files into smaller parts
- sync in smaller batches
- retry on stable connection
Keep large files as-is, and sync won’t complete.
What You Should NOT Do
Do not reinstall the app.
Do not reset your account.
Because:
- your app is working
- your data is intact
The failure is size-related.
Final Answer
Your sync didn’t break.
Large files are exceeding what the app can complete.
So when only big data fails after an update,
reduce the size.
That’s the fix.