Unreal Engine Issues and Bug Tracker (UE-93138)

Steps to Reproduce

Create a Windows username with a space
Launch Unreal Editor with any project
Configure a remote Mac IP address and username
Under Project Settions, IOS under the Build category press the Generate SSH Key button
After entering your password and empty passphrase twice, downloading the key will generate an error

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-93138 in the post.

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Fixed

SSH key generation fails when Windows user home directory contains a space