How to turn off iCloud Contact Sync in Windows
Sometimes you’ll want to turn off iCloud sync on your PC while you edit or update your contacts. Here’s how to do it.
(A quick note: These instructions were written for Windows 7 and Outlook 2010, but the instructions are basically the same for other versions.)
1. Close Outlook completely.
2. Click Start.
When the Start menu opens, click Control Panel.
3. The Windows Control Panel will open.
Click on the “Network And Internet” section. (Note: This step applies when you are in the Category view. If you are in the Icon view, skip to step 4.)
4. Click the iCloud icon.
5. The iCloud account window will open.
Click the Sign Out button in the bottom left corner of the window.
6. When you sign out, you’ll see the iCloud sign in window. Close the window.
You can now edit or update your contacts. When you’re ready to re-enable iCloud sync, follow the instructions above, but this time enter your Apple ID and password in the iCloud account window.
You can find out more information at Apple’s iCloud setup support pages.