I think it was the 23rd when I saw the problem. I have pasted in all the entries in the Excel error log as of today (27th) below. I hope this helps
09:19:23 Excel Update Bets refresh failed
09:49:27 Excel Update Bets refresh failed
10:19:31 Excel Update Bets refresh failed
14:50:05 Excel Update Bets refresh failed
14:53:40 Excel Update Bets refresh failed
14:57:39 Excel Update Bets refresh failed
15:15:28 Excel Update Bets refresh failed
15:20:09 Excel Update Bets refresh failed
15:50:12 Excel Update Bets refresh failed
16:17:51 Excel Update Bets refresh failed
16:20:16 Excel Update Bets refresh failed
17:01:51 Excel Update Bets refresh failed
17:20:24 Excel Update Bets refresh failed
17:50:27 Excel Update Bets refresh failed
18:44:34 Excel Update Bets refresh failed
18:45:25 Excel Update Bets refresh failed
18:50:35 Excel Update Bets refresh failed
19:19:59 Excel Update Bets refresh failed
19:41:12 Excel Update Bets refresh failed
19:43:28 Excel Update Bets refresh failed
20:01:37 Excel Update Bets refresh failed
20:07:22 Excel Update Bets refresh failed
21:20:54 Excel Update Bets refresh failed
21:30:10 Excel Update Bets refresh failed
22:21:01 Excel Update Bets refresh failed
23:51:13 Excel Update Bets refresh failed
00:21:16 Excel Update Bets refresh failed
01:51:28 Excel Update Bets refresh failed
02:51:35 Excel Update Bets refresh failed
03:21:39 Excel Update Bets refresh failed
03:51:43 Excel Update Bets refresh failed
04:51:50 Excel Update Bets refresh failed
07:22:09 Excel Update Bets refresh failed
07:52:13 Excel Update Bets refresh failed
08:20:00 Excel Update Bets refresh failed
09:49:34 Excel Update Bets refresh failed
10:14:23 Excel Update Bets refresh failed
10:17:02 Excel Update Bets refresh failed
11:18:32 Excel Update Bets refresh failed
11:20:22 Excel Update Bets refresh failed
11:20:43 Excel Update Bets refresh failed
11:23:53 Excel Update Bets refresh failed
11:24:15 Excel Update Bets refresh failed
11:52:43 Excel Update Bets refresh failed
14:15:33 Excel Update Bets refresh failed
14:15:43 Excel Update Bets refresh failed
14:15:56 Excel Update Bets refresh failed
15:23:02 Excel Update Bets refresh failed
15:53:06 Excel Update Bets refresh failed
16:04:16 Excel Update Bets refresh failed
16:07:06 Excel Update Bets refresh failed
16:23:18 Excel Update Bets refresh failed
16:59:11 Excel Update Bets refresh failed
17:01:19 Excel Update Bets refresh failed
17:23:26 Excel Update Bets refresh failed
17:49:10 Excel Update Bets refresh failed
19:23:38 Excel Update Bets refresh failed
08:00:09 Excel Update Bets refresh failed
08:34:56 Excel Update Bets refresh failed
08:42:42 Excel Update Bets refresh failed
08:53:11 Excel Update Bets refresh failed
09:05:00 Excel Update Bets refresh failed