When I open Excel in Office 365 Home version 2016, it throws an error with code 0x800704c9. It says to me to activate the office. When I enter my key, I get a prompt that the key is invalid. I logged into Office 365 using the web, where I can see that the key is valid. How to fix the 0x800704c9 Office 365 error?
You can try the following methods to fix the 0x800704c9 Office 365 error on Mac laptop –
Method 1 –
a. Open Excel.
b. Go to Help.
c. Check for updates.
d. Close the app after the update.
e. Restart Excel.
f. Your error will not bother you anymore.
Method 2
a. Download license removal tool from this link
b. Open the file (.pkg).
c. Click on Continue.
d. Enter the information as asked to you.
e. Select install.
f. After successfully removing the license, close the application.
g. Move the application to the trash.
h. Restart excel and give your license key. It will work.
