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Question

Something went wrong with the upload.

  • April 1, 2026
  • 1 reply
  • 23 views

Hi all,

Quick Box question. I shared a folder with an external peer. They say every time they try to upload they get:

“Something went wrong with the upload. Please try again.”

Folder is set to allow uploads for external collaborators and I’ve given all permissions I can.

Is there any known cause/workaround for this error (e.g., filename length, size limits, external domain restrictions) that I might be missing?

Thank you!

1 reply

Rona Box
  • Community Manager
  • April 29, 2026

Hi ​@Itzelr_r

Welcome to Box Community, and we’re glad to help resolve your external collaborator’s upload error.

 

Here’s a comprehensive troubleshooting guide to fix your upload error. And if you continue to experience the error, could you answer the following questions?

  • Is the user uploading an individual or multiple files?
  • What is the size of the file your user is uploading?
  • Are you presented with the same error when you upload file to the folder?
  • Please capture the exact date and time when the error occurred including your time zone. 
  • Next, please take HAR captures

Hope it helps! Let us know if you have additional questions.