Situation

# 在公共電腦上，登出Teams後還是會顯示帳號名稱，重灌無效
On a public computer, the Teams account name still appears after signing out.
Reinstalling the app did not resolve the issue.

Solution

[1]
# 開啟 "執行" 並搜尋 "%localappdata%"
Windows + R > %localappdata% > Enter

[2]
# 刪除以下目錄內的檔案
1. AppData > Local > Microsoft > IdentityCache
2. AppData > Local > Microsoft > TokenBroker > Cache 
3. AppData > Local > Microsoft > OneAuth