Once it’s been added, Chrome will no longer pause syncing. On the Cookies window, click the Add button next to the Allow section and enter the domain mentioned earlier. To do that, open a new tab and enter the following in the URL bar chrome://settings/content/cookies The above solution is what works for most but in case it doesn’t do the trick for you, what you can do is, whitelist the following domain under Chrome’s cookies. While this should work, there is one other fix that other Chrome users have been able to use to fix this problem.
Open Chrome and enter the following in the URL bar. You can turn it off from the Chrome Flags page. This appears to be an odd feature that’s enabled by default. Here’s how to fix Chrome sync pausing and repeatedly asking you to sign in. However, there’s an odd problem that some Chrome users are facing with the sync feature pausing intermittently. It’s exceptionally useful and once you have it set up, you tend to get used to it always working and ensuring a seamless transition between different systems. Chrome’s sync feature can sync bookmarks, your browsing history, passwords, and it even lets you access the tabs you have open across other devices.