my office only can view but not edit

Hi @BenLi

Regarding your issue, may I kindly ask a few questions to help understand it better. 

• I saw that you posted your question under the Education category so to better support you, would you mind letting me know is this account a personal Microsoft account (e.g., account.microsoft.com) or a work/school account (e.g., myaccount.microsoft.com) provided by an organization?       
• Does the issue happen in both desktop app and web (office.com)?
• Does this happen with all Office apps (Word, Excel, etc.) or just one?
• Do you see a message like “View Only” or “Read-Only” at the top?
• Are other users able to edit the same file, or is it just your account?
• Is the file shared by someone else, and if so, do you have Edit permission? 
• Could you provide a screenshot of the issue (make sure to hide your personal information) if possible?  

Hope to hear back from you soon.   

The initial response may not fully address your needs, but it will help me better understand your situation. Once I get the information, I will try my best to find the next steps.  

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