---
title: Why am I having issues unzipping my file package?
description: At MASV, you don't need to compress a file to send it as we don't have transfer file limits. If you compress the files, you might run into some issues.
---
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# Why am I having issues unzipping my file package?
## Troubleshoot issues with ZIP files
The MASV Admin Console (formerly MASV Web App) is a browser-based app, so files are zipped as part of the download process. If you run into issues when unzipping the download, check the following list to resolve the problem:
1. Are you using a third-party zipping tool?
2. Do you have enough free hard drive space for the files?
3. Does the package contain pre-zipped files?
### Zipping tool
We recommend that you use the default unarchiving utility for your OS. Windows and macOS both have unzipping capabilities. We have heard some complaints about some third-party zipping tools causing corrupted file issues.
### Enough space for files?
If you do not have enough space on your hard drive you will not be unable to complete the unzipping process. Ensure you have the free space you need for the files.
### Avoid sending zipped files in a package
We advise senders not to pre-zip their files. Why?
- **ZIP files are not cross-platform compatible**. For example, if you zip a file on a Mac and send it to a recipient who has a Windows machine, the file will not be accessible. MASV Admin Console automatically creates cross-platform ZIP files *after* the sender has finished uploading their files, so please leave the zipping to us!
- ZIP files that contain **at least one file over 4 GB** in size will cause issues.
If zipping the files is absolutely unavoidable, keep the restrictions above in mind and test your zipping/unzipping tool and any other file compression formats (.rar, .7z, .tar, .gz...) thoroughly to prevent issues.
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