An issue with sending inventory updates to Booking.com

Incident Report for Mews

Postmortem

Summary

On Thursday 22 October 2026, an outage in Booking.com's authentication service prevented Mews
from exchanging data with Booking.com. Between 11:05 and 18:00 UTC, availability and rates
stopped updating on Booking.com, and reservations from Booking.com were delayed in reaching Mews.

The fault was in Booking.com's systems and affected other partners besides Mews.

Recovery

Booking.com restored their authentication service at approximately 15:00 UTC. Reservation
delivery resumed automatically and the full backlog had been delivered by 17:00 UTC. We then
replayed every availability and rate update that had failed during the outage, and Booking.com
was fully up to date by 18:00 UTC. All delayed reservations arrived; none were lost.

Please review your Booking.com reservations from 22 October

While the outage was in progress, availability on Booking.com could not be refreshed. Guests
could therefore book rooms that were no longer available, and some properties received bookings
they are not able to fulfil.

If you take reservations from Booking.com, we recommend reviewing those received on 22 October
and resolving any that conflict with your availability.

We are sorry for the disruption this caused to your operations.

Posted Nov 05, 2026 - 10:22 CET

Resolved

Booking.com has resolved the issue!

We are staring the recovery process of inventory updates. The changes made between created between 11:00am UTC and 15:00 UTC today were delivered to booking.com with a delay.

We can also confirm that we see reservations coming in from Booking.com. We expect Booking.com to send us all reservations (created or modified) during the outage interval.

We are still monitoring the recovery process

Posted Oct 22, 2026 - 17:27 CEST

Update

The issue on Booking.com's side remains unresolved, and inventory updates and reservation delivery are still affected.

We are continuing to monitor the situation and preparing the recovery process so we can start processing queued inventory updates and recover affected reservations as soon as Booking.com restores its services.

We will provide another update as soon as there is meaningful progress.

Posted Oct 22, 2026 - 16:45 CEST

Update

Booking.com is actively working on fixing the issue. It is classified as Major disruption of their service.

The incident can be observed here - https://connectivity-status.booking.com/

Unfortunately, the issue has also started affecting reservation delivery, so we can confirm the are no reservations delivered. Therefore we decided to reclassify the incident as critical.

Once the issue will be resolved on Booking.com side, we will handle the recovery of reservations, as well as missed inventory updates.

Posted Oct 22, 2026 - 15:03 CEST

Identified

We have identified the cause to be on Booking.com side. We are reaching out to them to resolve the issue as soon as possible.

Reservations are still coming in, the issue affects only sending inventory updates (i.e. availability, prices and restrictions).

Posted Oct 22, 2026 - 14:15 CEST

Investigating

We are currently investigating an issue with delivering inventory updates to Booking.com. All requests are queued and waiting on our side for booking.com to accept them. Once the issue will be resolved, we will push all the queued data.

Posted Oct 22, 2026 - 13:58 CEST

This incident affected: Mews Marketplace.