Hi,
Is this the same prompt that you've received?
https://support.office.com/en-us/article/I-get-an-Enter-Network-Password-prompt-8767a67f-7a02-4d49-87d6-b5f4b404a04b
Try to follow the instructions mentioned in it to troubleshoot the issue and see if it works.
Please feel free to post back with any findings.
Regards,
Ethan Hua
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