If your upload gets stuck at a certain percentage, freezes at “Preparing…”, or never finishes, the issue is usually related to connection stability, file size, browser limitations, or temporary server delays. This guide explains the most common causes and how to resolve them.
Uploads require a stable connection. Even brief drops can freeze progress.
Test your connection speed
Switch to a more stable network
Restart your router if speeds fluctuate
Avoid streaming or large downloads while uploading
Large files are especially sensitive to unstable connections.
If the file exceeds your plan’s upload limit, the progress bar may freeze instead of showing an error.
Check your plan’s maximum upload size
Try uploading a smaller file
Upgrade your plan if you frequently upload large files
If smaller files upload normally, the issue is size‑related.
If your account is full, uploads may freeze before completion.
Open Storage Usage in your profile
Delete or permanently remove files from Trash
Try the upload again
Uploads cannot complete without available storage.
Some browsers or extensions interfere with upload processes.
Try Chrome, Firefox, Edge, or Safari
Disable ad blockers or privacy extensions
Use an incognito/private window
Update your browser to the latest version
If uploads work in another browser, the issue is browser‑specific.
Temporary session issues can freeze the progress bar.
Refresh the page
Sign out and sign back in
Restart the upload from the beginning
This resolves most short-term upload freezes.
Security software may block upload requests.
Temporarily disable upload‑blocking features
Add OwlCloudHost to your allowed list
Try the upload again
If the upload works afterward, the issue is caused by local security settings.
If the file is damaged or partially corrupted, the upload may freeze.
Try opening the file on your device
Re‑save or export the file again
Test uploading a different file
If only one file freezes, the file itself may be the problem.
High traffic or maintenance can slow down upload processing.
Wait a few minutes
Try uploading again
Test with a smaller file to confirm
Temporary delays usually resolve quickly.
If uploads continue to freeze after trying the steps above, the support team can help diagnose the issue.
Submit a ticket: https://help.owlcloudhost.com/hc/tickets/new
Email: support@owlcloudhost.com
Include the file size, browser, and where the upload gets stuck.