We are seeing WOPI errors when opening Office files via Box Drive or Box for Microsoft Office (Desktop) on Windows devices.After troubleshooting, we found that:
The issue occurs only when the Windows user profile folder contains Japanese characters (e.g., C:\Users\山田太郎\...).
Creating a new Windows profile with English characters only makes the WOPI errors disappear completely.
This makes us suspect a compatibility issue between WOPI / Box for Office (Desktop) and non‑ASCII Windows profile paths.
However, we cannot realistically rename all existing user profiles in our organization.
What I’d like to ask:
・Is this a known limitation of Box Drive or Box for Microsoft Office (Desktop)?
・Are there workarounds that don’t require creating a new Windows profile?
・Has anyone found a practical fix (e.g., config changes, symbolic links, environment overrides)?
・Is Box planning support for non‑ASCII Windows profile paths in WOPI?
Any help or insights would be greatly appreciated. Thank you!
WOPI errors caused by Japanese Windows user profile name — any workaround?
Best answer by KeLoLo
Hi
I just solved it. The cause was a Shield suspicious location rule. I solved it by adding Box for Microsoft Office (Desktop) to the exclusion settings. It wasn't a problem with non-ASCII characters.
Sorry for the trouble. Thank you very much!
Hi
Welcome to Box Community, and we’re glad to assist!
To answer your questions, let me open a support ticket and someone from the Box Product Support team will reach out to you shortly.
Thanks for posting!
Hi
I just solved it. The cause was a Shield suspicious location rule. I solved it by adding Box for Microsoft Office (Desktop) to the exclusion settings. It wasn't a problem with non-ASCII characters.
Sorry for the trouble. Thank you very much!
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