It seems there are hundreds if not hundreds of thousands of people who cannot sync their iCloud data with Outlook. I just ran across this and spent 5 hours 20 minutes finding the correct solution for my client.
Here is the issue, icloud contacts and calendar and tasks are not syncing with Outlook. There are several error possibilities or in our case there were no errors, just no syncing.
In this case we had Windows 10 Professional x64 and Office Home and Business 2019 x64. The end user uses an iPhone and iCloud photos et al.
Searching the internet it seems the troubled systems are Windows 9 and 10, Office 2013, 2016, 2019 and 365.

1. Gmail Contacts Not Syncing With Icloud
2. Gmail Contacts Not Syncing With Icloud Account
3. Icloud Mail Not Syncing
4. Icloud Account Not Syncing With Outlook

Jan 19, 2021 Open any browser and head to your Google Contacts Select the Contacts you want to sync with iCloud Click on the More button then choose Export. Visit iCloud.com and log in with your iCloud account Click Contacts icon. Connecting to Apple iCloud on Android Is Simple. Syncing iCloud and your Android device can take some time to get set up. But it's well worth the effort if you have email, contacts, calendars, and other data that you want to sync across your various devices. These aren't your only options for accessing iCloud on non-Apple devices. How to Sync iPhone Contacts to Gmail with iCloud. Though the procedure of using iCloud to export iPhone contacts to Gmail is long and complex, iCloud is still our first recommended solution. The main reason for this is that with the iCloud Keychain technique, the exported contacts are 100% secure. Here are the steps. Then turn on Contacts in iCloud on your iPhone by going to Settings your name iCloud. Then you can find the Google contact has been imported to your iPhone. In some instances, people need to do the reverse to import contacts from iPhone to their Gmail account.

The short answer is, the Windows Store iCloud APP does not work. You have to use the Windows Program file.
The short repair is:
In Outlook, disable the iCloud Add-in, and select remove if you can. I could not.
To do this, open Outlook, select “File / Options” in the new window.

On the left side, almost at the bottom, click on “add-ins”

At the bottom click on “Go” if the Manage COM Add-ins is selected

Deselect the checkbox next to iCloud Outlook Add-in and with it highlighted in blue, select remove. If it won’t remove, don’t worry.

Close Outlook, uninstall the iCloud APP (I use REVO uninstaller on “medium” to get rid of all the extras.)
Reboot the PC. Download and install the program, NOT the APP. Here is where I got it: https://secure-appldnld.apple.com/windows/061-91601-20200323-974a39d0-41fc-4761-b571-318b7d9205ed/iCloudSetup.exe
Or you can go here:

Reboot again.
Navigate to the iCloud.exe file “C:program files (x86) Common files Apple Internet Services”.
Right-click on the file, select the “Compatibility” tab. Run in Compatibility Mode for Windows 8 and select “Run the program as an administrator”.

Open iCloud, select what you want to sync:

Select Apply. Wait until the syncing profile goes away
Close iCloud.
Open Outlook. iCloud should be listed in the toolbar.

To make your contacts from iCloud as the primary address book click on “Address Book”.

If iCloud is not listed, in the new windows, click on “Tools and then Options from the dropdown menu.

Click on “Custom” and then select “iCloud”. If it is not here, click on “Add”.

Then select “iCloud” and click on “add”.
“OK” your way out to just the Outlook home screen.
Now when you click on your Address book it should be there.

I hope this saves someone hours of their life they cannot get back.
Until we meet again, have a virus free week.

Jeff is not the only one wondering how to import Google contacts to iPhone. Thousands of people struggle with the exact same thing, but it's actually very simple once you know how to do it. Now, there are a couple of ways to go about importing Google contacts to iPhone, so we're going to provide you with both methods to ensure you don't encounter any problems.

1. Import Google Contacts to iPhone by Syncing

Before you do anything, you'll need to have set up a Google account on your iPhone. To do that, you'll need to follow the steps below:

Gmail Contacts Not Syncing With Icloud

• Go into Settings > Accounts & Passwords (or go to Settings > Mail, Contacts, Calendars if you use iOS 10.3.3 and earlier versions) and then hit Add Account.
• Following that, just press the Google logo to begin the process.
• Enter your Gmail credentials and hit Sign in. You'll then be asked what you want iOS to access in your Google account; as long as Contacts is selected, it doesn't really matter.

Gmail Contacts Not Syncing With Icloud Account

By now, you should have your Gmail set up on your iPhone. Here's how to sync the Google contacts with your iPhone.

• Again, go to Settings > Accounts & Passwords (or Settings > Mail, Contacts, Calendars) on your iPhone, and then hit the Gmail account that you just added.
• You'll see a little toggle button next to Contacts – make sure that is turned on (in green).
• Your contacts will then start streaming in from Gmail to your Contacts section on your iPhone.

2. Import Google Contacts to iPhone via iCloud

An alternative method is to utilize iCloud to retrieve your Google contacts to your iPhone. By deploying this strategy, you'll be able to select which contacts you import, rather than having them all flood across. It's really easy, just follow these steps:

• First off, make sure you're using the old version of Google Contacts, because the newest update doesn't support the exporting function.
• Log into your Gmail account on your browser, then hit Google > Contacts.
• Choose the contacts that you want to import, press More > Export > vCard format.
• You'll then need to go across to your iCloud and log into your account using your Apple credentials on iCloud.com.
• Click on Contacts and select Import vCard (the file you've just exported from Google).
• Then turn on Contacts in iCloud on your iPhone by going to Settings > [your name] > iCloud.

Then you can find the Google contact has been imported to your iPhone.

Icloud Mail Not Syncing

Conclusion

Icloud Account Not Syncing With Outlook

In some instances, people need to do the reverse to import contacts from iPhone to their Gmail account.
Moreover, people generally want to know how to sync their contacts from Google to iPhone when they've switched from being an Android user.
The two methods that we've listed will solve your problem about how to import Google contacts to iPhone; Just need to select the method that is best for you. If you know other methods which can do this, just leave a comment.