This problem mainly occurs when-
You had Microsoft Office on your Mac computer.You uninstalled it.You installed a newer version of Microsoft Office.You tried to activate the new installation with your Microsoft account.
If it is the case, you can fix it within moments with the help of these troubleshooting guides. When your computer cannot differentiate between old and new activation, this problem arises. That means you need to remove the early activation first, then try to activate the original installation.
The system requires that you sign on to a valid account
To fix The system requires that you sign on to a valid account error on Mac, follow these steps-
1] Remove all data licenses from KeyChain Access
KeyChain Access stores all the passwords, including software licenses. If the KeyChain Access already has an entry named “Office,” there is a high chance of getting this error message while activating a new installation of Microsoft Office. Therefore, you need to remove all the entries of Microsoft Office from KeyChain Access. To do that, press the Cmd+Space bar, to open the Spotlight search, and search for keychain access. After typing, you need to open the respective result.
Now search for “office” in the given search box. If you get anything related to that search term, you need to right-click on it and use the Delete option.
2] Delete entries from Library folder
The Library folder of Mac is something like Program Files of Windows. If you remove some specific files, it will delete the license, and you can get the activation window. To do that, open the Library folder. In case you do not know the process, you can go to your desktop and click the Go button that is visible on the top navigation bar. After getting the list of folders, press the Option key. Now you should see the Library folder on the menu. Inside the Library folder, you need to open the Group Containers folder. Here you should four entries called-
UBF8T346G9.msUBF8T346G9.OfficeUBF8T346G9.OfficeOneDriveSyncIntegrationUBF8T346G9.OfficeOsfWebHost
You need to remove all these four folders, and re-open Word or Excel to activate the product without any error.
3] Use Microsoft’s Office license removal tool
If you cannot find anything manually in the KeyChain Access, you should try out the license removal tool by Microsoft. It won’t uninstall any Office product, but it can remove the license instantly. You need to go through some simple screen instructions to get it done. In the end, you should find a window like this-
You can download the Microsoft Office License Removal tool from here.
4] Switch from network account to local account
If you are using a network account on your Mac computer, you need to switch to a local account. Otherwise, you cannot activate the Microsoft Office installation. You can sign out from the network account and log into your local account. It is as simple as said. If you do not have a local account, you can create it first. To do so, open the System Preferences and go to Users & Groups. Now, you need to click the lock icon and enter to password to make further changes. You should find a plus(+) sign that you need to click to create a new user account.
Then, fill up the boxes with the required details to get the job done. After creating the account successfully, you need to sign out from the network account, log into your local account, and try to activate the Microsoft Office. That’s it! This should help.
