Hi,
Did you mean mac cannot connect to Wi-Fi and you cannot load Office?
I suggest you refer to this support article and try the methods:
https://support.apple.com/en-us/HT202663
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
If my understanding is incorrect please provide more information and I'm glad to help you.
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