I often switch between connections with and without proxy. When I change a password while using a connection with proxy, the sync fails and I can't trigger it manually when I connect to a network without proxy. I have to make some change to the item or wait until 1Password notices it's out of sync. (It would be best if 1Password tried to sync automatically when I change the network after previous sync failed, but it should be possible to trigger it manually when everything else fails. This happened to me a few times already and it's always frustrating.)
Here are log messages about the failed sync:
AgileBits.OnePassword.Framework.HttpConnection HTTP GET https://[my-account-url].1password.com/api/v1/overview with error 0x80131509 System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 126.96.36.199:443 at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult) at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception) --- End of inner exception stack trace --- at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult) at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar) --- End of inner exception stack trace --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Net.Http.HttpClient.<FinishSendAsync>d__58.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at AgileBits.OnePassword.Framework.HttpConnection.<SendAsync>d__15.MoveNext() in C:\code\opw\AgileBits.OnePassword.Shared\ObjectModel\HttpConnection.cs:line 50 AgileBits.OnePassword.ObjectModel.AccountSyncActivity Synced A2. AgileBits.OnePassword.ObjectModel.ActManager Sync A2 is complete (63032 ms).
1Password Version: 6.6.405d
Extension Version: Not Provided
OS Version: Windows 10 (1703)
Sync Type: 1Password account