Hi Tae-Hee,
Greetings. Thank you for posting the thread to our community.
I understand your concern, it seems the Refworks Citation Manager add-in is not working in your Word. For the situation you’ve encountered, I do understand the inconvenience caused and feel very sorry about it.
In that case, to narrow down the situation and identify the root cause of your issue, May I confirm the following information with you?
- May I confirm whether the issue happens after you signing in or when you open the add-in?
- May I confirm whether your classmates have the same issue or not? And whether this issue happened before?
- May I confirm the version number of the Word (File > Account > About Word) you are using with? Please provide me a screenshot of your Word version in the following format:
Meanwhile, I suggest you can try the following methods and check whether the issue persists or not.
- Try the troubleshooting methods in the Official support article: Troubleshoot user errors with Office Add-ins - Office Add-ins | Microsoft Learn. I suggest you can review the support article and try the methods to check whether the issue persists or not.
- Change other Internet environment: Since the Refworks add-in is an Internet required add-in, I suggest you can change your Internet environment (connect mobile hotspot, changing other Wi-fi) and check whether the issue persists or not.
- Perform an Online repair to your Office app: Repair an Office application - Microsoft Support. I suggest you can follow the steps to perform an online repair to your Office suite and check whether the issue persists or not.
Appreciate your understanding that sometimes the initial reply may not resolve the situation very soon. However, we can work together to narrow down and resolve the situation. Please kindly provide the requested information so that I can work further.
Hope you having a nice day.
Sincerely,
Harry | Microsoft Community Moderator