How to Fix OneDrive ZIP Download Fails for Multiple Files
Question details
Users encounter exceptions and errors when attempting to download multiple files as a ZIP archive from a shared OneDrive folder.

- Product
- Microsoft OneDrive
- Device & OS
- not provided
- Scenario
- Downloading multiple files simultaneously from a shared OneDrive folder via the web browser.
- Observed behavior
- Individual files download correctly, but selecting multiple files to download as a ZIP creates corrupted error files containing 'InvalidHostMeTAException' and duplicate file extensions.
Ensure you have the necessary edit or modify permissions for the shared OneDrive folder, as resolving file conflicts may require renaming the affected files.
Remove Duplicate File Extensions in OneDrive
Fix file naming conflicts that trigger the ZIP download exception by removing double extensions (e.g., .jpg.jpg).
OneDrive's compression service can crash when processing files with duplicate extensions, resulting in the InvalidHostMeTAException error. Cleaning up file names often restores normal ZIP functionality.
Open the shared OneDrive folder in your web browser and look for files with duplicate extensions in their names.
Right-click the affected file, select 'Rename', and delete the extra extension so it ends with a single format tag (e.g., '.jpg').
Select the newly renamed files and click 'Download' at the top menu to generate a fresh ZIP file.

Sync Files Using the OneDrive Desktop App
Bypass the web-based ZIP creation process entirely by syncing the folder directly to your local file explorer.
Download Files in Smaller Batches
Prevent server-side exceptions and ZIP corruption by limiting the number of files downloaded at one time.
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Frequently Asked Questions
What is InvalidHostMeTAException in OneDrive?
This is a server-side error in Microsoft OneDrive that occurs when the cloud service fails to package multiple files into a ZIP archive. It is frequently triggered by files with invalid naming conventions, duplicate extensions, or backend service defects.
Why does OneDrive create error files when downloading ZIPs?
When OneDrive encounters files with double extensions (like image.jpg.jpg) during the ZIP compression process, the system's conflict resolution fails, which corrupts the metadata and generates error files in the downloaded archive.
How can I safely download 1,000+ files from a shared OneDrive folder?
For downloading large volumes of files, it is highly recommended to use the OneDrive desktop sync client instead of the web browser's ZIP download feature. Clicking 'Sync' on the web securely downloads all files directly to your computer's local drive without compression limits.




