Can open crypto orders fill after maintenance?

Yes, if the exchange retained the order and matching has resumed, the order can become eligible to fill again under its original terms. A maintenance pause alone gives you no confirmation that an order was cancelled. Check its final status before placing a replacement.

Read the sentence about existing orders alongside the sentence about execution. An order retained through a matching suspension cannot fill during that suspension; after reopening, its price conditions and available liquidity still matter. The examples below explain published maintenance rules, rather than report a live outage.

Does maintenance cancel an existing crypto order?

Luno's 1 October 2026 maintenance notice gave a clear answer for that event: existing exchange orders would stay in the book, but placing orders, cancelling them and executing trades would be unavailable. The restrictions covered the website, apps and API. Changing the way you connected would therefore leave the restriction intact.

The notice separately allowed deposits and withdrawals, while warning that balance and transaction updates could be delayed. Seeing a deposit arrive would not have demonstrated that the trading service had reopened.

For another event, look for an explicit statement that orders will be retained or removed. If the notice says only “trading suspended,” order survival remains unanswered. Ask support about the affected pair and order type before relying on either outcome.

Can you cancel orders in cancel-only or post-only mode?

A restart can restore control over orders before it restores trading. Kraken's trading-mode definitions, checked on 2 October 2026, distinguish three states:

• Maintenance: no new orders, no cancellations and no matching.
• Cancel Only: you can remove pending orders; placing new ones and matching remain disabled.
• Post Only: you can submit limit orders with the post-only option and cancel pending orders, but matching remains disabled.

In that sequence, an enabled order-entry form can coexist with a market that cannot execute trades. Read the exchange's definition of the current mode rather than treating an available button as confirmation of a full restart. These definitions belong to Kraken; a similarly named phase elsewhere needs its own rules.

Will a stop-loss order work during exchange maintenance?

Check the notice for trigger handling as well as trading availability. Delta Exchange's maintenance guide, dated 3 May 2024, says that stop orders and liquidations are not triggered during its maintenance phase. Its subsequent post-only phase allows order entry and cancellation before matching begins, followed by an opening auction.

That policy describes a temporary interruption, not protection from what happens after trading returns. A stored stop order cannot supply a fill while execution is unavailable. If your plan depends on that order acting during a scheduled window, establish the exchange's trigger and reopening rules beforehand.

Do not transfer Delta's liquidation statement to another venue, or from one product to another. A notice about spot trading may leave futures untouched. Look for the product name attached to the restriction; “maintenance” alone leaves too much unspecified.

When can orders fill again after maintenance?

The expected end time and the confirmed reopening can differ. Luno originally scheduled its October event for 04:00–05:00 UTC. At 05:38 it reported an extension; at 06:01 it reported restoration while monitoring continued. The final resolved update followed at 08:42. Those timestamps describe the published updates, not an independently measured outage.

When reading an incident page, start with the latest update, then work back to the original restrictions. A fresh “monitoring” message may explain that trading has returned, while an older estimated finish still appears further down. Check the message's contents and affected service, not just its status label.

A cancellation request also needs a result. Crypto.com's Exchange API documentation distinguishes acknowledgement of a cancellation request from confirmation that the order has been cancelled. For someone using a website or app, the practical check is the final order status and trade history, rather than the click alone. This distinction becomes particularly useful when a connection drops near a maintenance boundary.

If the records disagree after service returns, keep the order identifier, the response you received and its timestamp for support. Ask whether the order was cancelled, partially filled or still active. An account-specific answer is needed; a general “systems operational” banner cannot resolve that record.

Which part of the maintenance notice applies to your balance?

Someone holding coins without an open order has a different question from someone waiting for a sale to execute. Match the notice to the function you actually need: access to the account, trading a named pair, a conditional order, or an external transfer. Write down the affected function and the last confirmed update beside it.

If only a transfer network is paused, use the guide to withdrawal-pause notices. If the announcement names a blockchain upgrade, the network-upgrade guide separates what the exchange handles from what a holder might need to do. Neither headline supplies the order-handling terms of an exchange maintenance window.

The useful endpoint is specific: you know whether your existing order remains active, whether cancellation has been confirmed, and whether matching has resumed for that market. Until one of those answers is established, keep it marked as unknown.