The technical problem on individual stocks affected traders from the start of Monday's session, preventing them from placing trades, multiple dealers said.
The exchange's stock indexes updated when trading opened but also stopped soon after. Futures and options began trading normally initially, but the NSE has stopped providing quotes, the dealers said.
Get the latest election news, live updates and election schedule for Lok Sabha Elections 2019 on ndtv.com/elections. Like us on Facebook or follow us on Twitter and Instagram for updates from each of the 543 parliamentary seats for the 2019 Indian general elections.