I want to restrict task downloads and result uploads to the hours between 17:00 and 23:59. I set those limits in Options -> Computing prefs -> Daily schedules -> Network where I ticked the "Transfer files only between" box and put 17:00 and 23:59 in the text boxes and clicked SAVE. I restarted the client and even tried a reboot but the client ignores the settings and transfers files outside of the specified timeframe.

In global_prefs_override.xml I see

<net_start_hour>17.000000</net_start_hour>
<net_end_hour>23.983333</net_end_hour>

which tells me the limits are being saved properly.

I did not click the "Use web prefs" button on the Daily schedules window so it should be using my local prefs. Is this feature broken or am I using it incorrectly?

Did you also select 'Network activity based on preferences' on the Activity menu in BOINC Manager?

If you had set 'Network activity always', that would cancel out your time-of-day preferences.

Doh! It works fine with "Network activity based on preferences" selected. Thanks.