I am trying to upload an application to newly created azure batch account from the portal I followed below steps-
1) Created a azure batch account.
2) Create .zip of the application exe in local desktop
3) Go to the application options
4) Click on add applications
5) Give applicationid, version and application package path by selecting the .zip from local machine.
6) Click on submit
Got different Errors-
Actually when we upload a .zip file in this case it's failing, its better to use Azure Batch Explorer, its a desktop application. https://azure.github.io/BatchExplorer/
Than you can easily add a package/ application to your batch account.
Also I was getting the same error when uploading a file to blob container from azure portal, so I used Microsoft Azure Explorer to upload and download the files.