Bitwarden on Windows not functioning after update to 2025.8.1

[CharlesSerrett]

Steps To Reproduce

1. Navigate to URL
2. Get 502 Bad Gateway

Expected Result

I expected to get the Bitwarden logon page.

Actual Result

bitwarden/web:2025.8.2 is constantly restarting while other containers are healthy.

docker logs bitwarden-web shows
chown: unknown user/group bitwarden:bitwarden
chown: unknown user/group bitwarden:bitwarden
chown: unknown user/group bitwarden:bitwarden
chown: unknown user/group bitwarden:bitwarden
error: failed switching to "bitwarden:bitwarden": unable to find user bitwarden: no matching entries in passwd file

Screenshots or Videos

No response

Additional Context

Server was working previously on 2025.5.1

Build Version

2025.8.1

Environment

Self-Hosted

Environment Details

-OS Windows 11 Hyper-V VM
-Docker Desktop
-RAM 16 GB
-Intel CPU 4 cores

Issue Tracking Info

• I understand that work is tracked outside of Github. A PR will be linked to this issue should one be opened to address it, but Bitwarden doesn't use fields like "assigned", "milestone", or "project" to track progress.

[bitwarden-bot]

Thank you for reporting this issue! We've added this to our internal tracking system.
ID: PM-25544

[rmcdowell-bitwarden]

Hi there,

Thank you for your report!

I was able to reproduce this issue, and I have flagged this to our engineering team.

If you wish to add any further information/screenshots/recordings etc., please feel free to do so at any time - our engineering team will be happy to review these.

Thanks once again!

[CharlesSerrett]

The update to 2025.9.1 was successful.