Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
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Please provide more information to help you better:
-What is the edition of Office did you purchase?
When you install Office suite by default 32-bit of version of Office is get installed, you need to choose 64-bit version from Additional install options. You may refer to the article below to know how to choose 64-bit version of Office.
Note: You may refer the article below to know how to install Office 32 bit before installing Office 64 bit.
I hope the above information helps. Try the suggestions and let me know the results at your earliest
convenience.
Thank you.