Microsoft Support Assistant HTTP 500 with non-ASCII account names

Update — October 7, 2026

The discussion was initially rejected automatically as SPAM by the Tech Community system, but the Community team has now manually reviewed and approved it. The discussion is visible again.

For context, Microsoft Consumer Support case 7109874722 was opened for this issue. The support team acknowledged that the problem appears to be in the Microsoft Support Assistant backend and stated that it should be handled by a dedicated team, but the case was ultimately closed without an engineering escalation.

The technical reproduction remains unchanged:

• Cyrillic Microsoft account profile name → HTTP 500
• Same account with ASCII-only profile name → HTTP 500 disappears

I would appreciate it if someone from the Microsoft Support Assistant / CMSP service team could review this case.