# Upload ZIP Files
**URL:** https://discourse.orthanc-server.org/t/upload-zip-files/4245
**Category:** General
**Created:** [January 18, 2024, 11:55am UTC](https://discourse.orthanc-server.org/t/upload-zip-files/4245 "2024-01-18T11:55:21Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Pedroso](https://discourse.orthanc-server.org/u/Pedroso)
#### Post date: [January 18, 2024, 11:55am UTC](https://discourse.orthanc-server.org/t/upload-zip-files/4245/1 "2024-01-18T11:55:21Z")
Hello,
```
Few weeks ago our Orthanc stop to accept the upload of zip files. Everytime we try to upload a zip file we get the following response:
```
* * *
## { “Details” : “Cannot parse an invalid DICOM file (size: 4649256 bytes)”, “HttpError” : “Bad Request”, “HttpStatus” : 400, “Message” : “Bad file format”, “Method” : “POST”, “OrthancError” : “Bad file format”, “OrthancStatus” : 15, “Uri” : “/instances/” }
```
At first glance I've thought that could be a problem with the zip file. So, tried a lot of another zip files always with same error.
Downloaded a Orthanc Docker from internet and run it on my machine. Try with the problematic zip file and it worked just fine.
Do you guys have any ideas how can I fix this?
Regards.
```
---
### Author:  [@jodogne](https://discourse.orthanc-server.org/u/jodogne)
#### Post date: [April 1, 2024, 9:39am UTC](https://discourse.orthanc-server.org/t/upload-zip-files/4245/2 "2024-04-01T09:39:32Z")
Hello,
If you expect support from this discussion group, please provide a [minimal working example](https://orthanc.uclouvain.be/book/users/support.html#discussing-a-minimal-working-example), including a ZIP archive and a command-line call to the REST API of Orthanc.
Regards,
Sébastien-