Hi, kiranjakka,
1. You have to wait at least 1 month for equities on nest.
2. For emergency u can trade from the now website itself when software fails.
https://www.nowonline.in
For now related problem
3. error type "now initialization failed interactive engine"os error" usually indicate problems with network. Check your Internet connections first (if there is any problem). If your internet connection is ok, check firewall settings / Anivirus( with firewall ) settings.
Probably, some application blocks Now Software.
1st make all runtimes (Like Java, Microsoft .NET Framework , Adobe Flash Player up to date). Test it. If failed again(or already up to date) use below.
For experiment 1st close all web site (for security), then deactivate your firewall/antivirus/spamware etc for 5 minutes, try to logged in with Now. You have to find which application blocks now.
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IMPORTANT TO NOTE:
If Now shows error "User can not login. Reason: Disconnected from NOW system" it is due to os related problem. you have to install the "Patch" file from the downloads section of zerodha Website..after installing the patch run "NOW" as administrator, this should fix the issue..
But, "now initialization failed interactive engine"os error" is due to Network problem don't install the patch 1st. If problem is due to network, u don't need the patch.
Hope it helps. Regards.