Can't access Windows share owned by user containing a space

The problem

My Windows system has a username of the form "FirstName LastName", as it has since the very first time I used a multi-user version of Windows 3 decades ago. I'm unable to open the share from HA.

What version of Home Assistant Core has the issue?

core-2024.6.4

What was the last working version of Home Assistant Core?

it never worked

What type of installation are you running?

Home Assistant OS

Integration causing the issue

N/A

Link to integration documentation on our website

N/A

Diagnostics information

If I add the share to Home Assistant under Settings / Storage, I'm able to enter my username with a space, and save. However, the share is not opened, and if I go back to edit it, both the username and passwords have been deleted.

Changing the username under Windows to one without a space is an extremely disruptive change, and not a viable workaround. So, I'm unable to share anything from my Windows system to Home Assistant because of this problem.

I tried using escaping in the name (\040 for the space), but that didn't work.

Example YAML snippet

N/A

Anything in the logs that might be useful for us?

Logger: homeassistant.components.hassio
Source: components/hassio/websocket_api.py:135
integration: Home Assistant Supervisor (documentation, issues)
First occurred: 22:08:30 (3 occurrences)
Last logged: 22:08:45

Failed to to call /mounts/TESTSHARE - Mounting TESTSHARE did not succeed. Check host logs for errors from mount or systemd unit mnt-data-supervisor-mounts-TESTSHARE.mount for details.

Additional information

Here is how I mount the share on my Raspberry Pi :

madbrain@pi64:/etc $ cat /etc/fstab
``
# irrelevant entries removed

//higgs.local/Network\040Backups /higgs_backup cifs _netdev,credentials=/etc/creds,uid=madbrain,gid=madbrain,x-systemd.automount 0 0

madbrain@pi64:/etc $ cat /etc/creds
username=Julien Pierre
password=removed

Hey there @home-assistant/supervisor, mind taking a look at this issue as it has been labeled with an integration (hassio) you are listed as a code owner for? Thanks!

Code owner commands

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home-assistant / core