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How to Fix OneDrive Rejecting .tib Backup Files During Upload
Question details
The user is unable to upload .tib (Acronis True Image) backup files to OneDrive because the system reports them as an unsupported file type.
- Product
- Microsoft OneDrive
- Device & OS
- not provided
- Scenario
- Uploading local system backup image files to cloud storage for safekeeping and disaster recovery.
- Observed behavior
- OneDrive rejects the upload of .tib files, citing an unsupported file type, despite official Microsoft documentation stating there are no known file extension restrictions.
Ensure your OneDrive account has sufficient storage capacity to accommodate large backup files and verify that your network connection is stable before attempting to upload.
Compress the .tib File into a ZIP Archive
By placing the .tib file inside a compressed folder, you can bypass SharePoint and OneDrive security filters that block specific extensions.
Windows and SharePoint servers may sometimes flag system backup files like .tib as executable or potentially unsafe. Archiving the file changes its extension to a universally accepted format, allowing a smooth upload process.
Open File Explorer and navigate to the local folder containing your Acronis .tib device image files.
Right-click on the .tib file, select 'Send to' from the context menu, and click on 'Compressed (zipped) folder'.
Open your browser, log in to OneDrive, and drag the newly created .zip file into the OneDrive interface to upload it.
Use the OneDrive Desktop Sync Client
The OneDrive desktop application handles file syncing differently than the web interface and can often bypass web-based upload restrictions.
Temporarily Rename the File Extension
Renaming the file extension before uploading prevents OneDrive from recognizing and blocking the .tib file format.
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Frequently Asked Questions
Why does OneDrive block .tib files during web upload?
SharePoint and Windows security filters sometimes incorrectly flag .tib (Acronis True Image) backup files as executable or potentially unsafe, which causes them to be blocked during standard web uploads.
Did Microsoft remove file extension restrictions for OneDrive?
While official Microsoft documentation states that most file type restrictions have been removed in newer versions of SharePoint and Microsoft 365, certain system or backup extensions like .tib may still trigger underlying server security flags in practical use.
Can I upload large device image files to OneDrive?
Yes, OneDrive supports individual file uploads of up to 250 GB. However, if dealing with unsupported backup extensions, you must first compress or rename the file to bypass security restrictions, and ensure your account has adequate storage space.
