Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.
[X] I have searched the tracker for existing similar issues and I know that duplicates will be closed
Describe the Issue
When using Postman's built-in support for NTLM authentication in conjunction with multipart file upload requests, it throws 401's when talking to my up-to-date Windows Server 2022 IIS server. Executing the same request with curl works flawlessly.
Steps To Reproduce
Create an IIS 'application' on my Windows 2022 server. Disable anonymous authentication and enable authentication using 'Windows Authentication'. Select NTLM als the sole Authentication provider.
Create a Postman POST request that posts a form that contains at least 1 file upload.
Hit the send error and be presented with an IIS 401 authentication error.
Screenshots or Videos
Form Post request without file succeeds towards my actual application code, working fine on the IIS level:
After including a file to upload, IIS declines the authentication.
Is there an existing issue for this?
Describe the Issue
When using Postman's built-in support for NTLM authentication in conjunction with multipart file upload requests, it throws 401's when talking to my up-to-date Windows Server 2022 IIS server. Executing the same request with curl works flawlessly.
Steps To Reproduce
Screenshots or Videos
Form Post request without file succeeds towards my actual application code, working fine on the IIS level:
After including a file to upload, IIS declines the authentication.
Operating System
macOS
Postman Version
11.19.0
Postman Platform
Postman App
User Account Type
Signed In User
Additional Context?
No response