Today, April 10, 20201 at 1500 UTC, Stellar public network validators voted to upgrade the network to Protocol 16. Upgrades take effect immediately, which means the network is now running on that new version of the protocol.
This special network upgrade was designed to resolve an issue that caused several nodes to go offline earlier this week. For more on that, check out the recent FAQ. Along with other validators throughout the ecosystem, SDF will continue to monitor the newly upgraded network, and to help anyone who is still having trouble to restore their network connection.
Like all important network-wide settings, protocol version is decided by validating nodes, who vote for and agree to a new protocol version the same way they vote for and agree to transaction sets. In this case, there was a very short turnaround time between the release of Stellar Core v16.0.0 and the upgrade vote, and we appreciate the diligence and swift action on the part of everyone in the ecosystem to prepare.
If you haven't upgraded your Stellar-related software, you will likely experience issues today. The fix is simple: install software that supports Protocol 16. In general, installing that software is quick and easy, and once you do, you should be back up and running in no time. For links to relevant releases, see our Protocol 16 Upgrade Guide. If you haven't already, we encourage you to sign up for updates on our status page to make sure you're aware of future network incidents and scheduled maintenance.
If you have a Horizon instance that is currently stuck, there are additional steps you may need to take to allow it to start ingesting ledgers again. For detailed instructions, see the Horizon Recovery Guide.
We are grateful for everyone's cooperation and patience as we rolled out this special protocol release, and feel incredibly lucky to have such a vibrant, engaged, and motivated ecosystem.