I just want to know if this issue has some kind of solution.
In outlook 2013 I added 2 time zones first London time zone the second the West Central Africa time zone (no DST).
The problem is that in the calendar the West Central Africa time zone doesn't show plus 1 hour.
How can I resolve this, to the calendar shows the correct time in central Africa time zone?
WCA is +1, while SAST is +2 - but windows 10 doesn't actually list a SAST time zone. They list city names and only list Pretoria... which is a +2.
So the problem isn't with outlook, it's that windows 10 lists some TZ by city and some by name and johannesburg and cape town apparently aren't important enough to list by name. I know they have limited space and can't list all of the cities, but I would expect either cape town or johannesburg. (WCA apparently doesn't have any cities worthy of being listed, so they used the region name. Sad.)
It definitely would be better if they used the old way of TZ name and cities. (I didn't check to see how windows 7/8 does it - i know really old windows versions used tz names and cities.)
It's highly recommended you leave DST enabled if your TZ support DST. As long as you use the correct time zones for the locations, outlook and windows will correctly adjust the appointments. It's very important that you use the specific tz for the area, not just any that is +2 (or +0) as the listing would include the dst settings - if you use the correct one for london and the correct one for SA, everything should work perfectly, at least going forward. Appointments created in the wrong TZ will need to be fixed.
I had someone in the Cayman islands using Eastern with dst off because they didn't want to use the correct one for their region because it had Bogota in the name and felt the Bogota time zone name made them look untrustworthy. They had a lot of problems with meetings because outlook made the wrong adjustments. (Pick your Outlook time zone wisely)