I had my Samsung Galaxy Note 4 (as well as several other Samsung devices - such as two tablets) set up to sync with my Microsoft Exchange Server all without problems before upgrading to Android Lollipop. After upgrading to Lollipop, I am no longer able to sync (refresh) via wifi.

How to fix it?

  • Have you tried removing and re-adding the accounts? Apr 24 '15 at 17:13
  • re-adding the accounts does not work!
    – Ferdinand
    May 7 '15 at 6:18

You have to erase the proxy number in the APN network. This is something that Lollipop retrieves from your Data provider, but trunks the communication with the server.

  • 1
    I have no idea how to go about erasing the proxy number in the APN network?
    – Ferdinand
    May 7 '15 at 6:19

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