我明明有訂閱office 365 但 powerpoint 程式下載下來之後，總是說我:找不到授權

I've tried the way you told but it doesn't work.
I've removed the license and reinstalled the office 365 but It still show no license found.

Yes, thank you so much!! My Chinese is not the best. I can read Chinese, but writing is hard for me.

This is what you can try -

I do want to make sure you already tried logging out and logging back in. If that didn't work, use spotlight to open Keychain, type in Office and then delete the data license file.

Then use this instruction to remove the license file: https://support.microsoft.com/en-us/office/how-...

After that, I would like for you to sign back into Office app and see if it activates.

你可以用英文回覆給我，我看得懂，翻譯成中文後讓我有點困惑，謝謝

Microsoft 365 家庭計畫幾週前就出現了這個問題，但後來這個問題已經解決。

您是否嘗試過最基本的步驟，例如登出，然後重新登入？

如果您已經擁有，請選擇桌面右上角的放大鏡來開啟 Spotlight。

搜索並打開鑰匙圈 Keychain。

輸入 Office，然後刪除資料許可證檔案 data license file。

然後按照以下說明刪除許可證。

完成所有操作後，請嘗試再次登入。如果有任何變化請告訴我。

英文應該是no license found
網路上已經很多了...