Is Memsource down?

We are currently investigating an issue affecting Phrase TMS services in the EU region, including the CAT editor, API, project management, translation memory, and related components. Users may experience errors or be unable to access these services at this time. Our team is actively working to identify the cause and restore full functionality as quickly as possible.

Services have stabilized and Phrase TMS in the EU region is now operating normally. We keep monitoring the situation.

This incident has been resolved.

Some users might be experiencing issues with accessing Phrase TMS.

The issue has been identified and a fix is being implemented.

The fix has been implemented, and we are monitoring the results. Phrase TMS can now be accessed with no further issues.

This incident has been resolved.

## Introduction We would like to share details about an incident that affected access to Phrase TMS on September 23, 2026. Between 9:02 AM and 11:27 AM CEST, users opening Phrase TMS from Phrase Platform could not complete the sign-in. They were either caught in a redirect loop or returned to the Phrase TMS login page with a sign-in error. Users who already had an active Phrase TMS session were not affected, and no customer data was lost or modified. Signing in to Phrase Platform itself kept working throughout the incident, both with a password and with single sign-on. So did signing in with a password directly on the Phrase TMS login page. This post-mortem explains what happened, how it was resolved, and what we are doing to prevent it from happening again. ## Timeline * **Sep 23, 2026 at 9:02 AM CEST** – An update to the Phrase TMS web application went live in production. It included a security improvement to how the sign-in flow handles redirects after login. From this point, users opening Phrase TMS from Phrase Platform could not complete sign-in. Shorty after, the issues was investigated internally. * **Sep 23, 2026 at 10:59 AM CEST** – The update from 9:02 AM CEST was identified as the cause, and we began preparing a rollback. * **Sep 23, 2026 at 11:13 AM CEST** – The rollback was verified in our test environment, and deployment to production started. * **Sep 23, 2026 at 11:27 AM CEST** – The rollback was live in all production regions. Customer-facing impact ended. * **Sep 23, 2026 at 11:28 AM CEST** – We confirmed that signing in to Phrase TMS from Phrase Platform worked again. * **Sep 23, 2026 at 12:04 PM CEST** – The incident was marked as resolved on our status page. ## Root Cause The incident was caused by a security improvement to the Phrase TMS web application. Its goal was to make sure users are only sent to trusted destinations after they sign in. To do this, the web application only accepted redirects to the Phrase TMS web address itself. However, when a user opens Phrase TMS from Phrase Platform, the sign-in process legitimately moves the user between different Phrase web addresses. Our servers already check each of these redirects against a list of trusted Phrase domains and allow them. The new check in the TMS core application was stricter than this server-side check and overrode it. As a result, legitimate redirects were replaced with the Phrase TMS start page, which started the sign-in process again. Users either looped through sign-in repeatedly or landed back on the Phrase TMS login page with an error. Signing in to Phrase Platform itself kept working throughout the incident, both with a password and with single sign-on. So did signing in with a password directly on the Phrase TMS login page. The failure happened at the step where a signed-in user moves from Phrase Platform into Phrase TMS. Because of this, some affected users reported the problem as a password issue: they entered their credentials successfully but were then sent back to a login screen. ## Actions to Prevent Recurrence 1. **Change rolled back** – The update that caused the issue was rolled back in all production regions at 11:27 AM CEST, which restored normal sign-in. 2. **Continuous sign-in monitoring** – We are adding automated checks that run regularly in all production regions and in our test environment. Each check performs the full sign-in from Phrase Platform into Phrase TMS and immediately alerts our on-call engineers if it fails. Before we rely on them, we will confirm that these checks detect the exact failure that occurred in this incident.

We are currently investigating an issue affecting the synchronization of jobs between Phrase Strings and Phrase TMS via webhooks in our EU region. Customers may experience failures or delays when syncing translation jobs between the two products. Our team is actively working to identify the root cause and restore full functionality as quickly as possible.

A fix has been implemented and deployed to address the webhook synchronization failures between Phrase Strings and Phrase TMS. We are currently monitoring the situation to confirm full stability. We will provide a further update once we have validated the resolution.

We are pleased to confirm that the webhook synchronization issue between Phrase Strings and Phrase TMS has been resolved and verified as fully operational, including for US data center customers. This incident is now closed.

We are currently investigating an issue causing slowness in the Jobs view within Phrase TMS (EU). Users may experience delayed load times or reduced performance when accessing project management features. Our team is actively working to identify the root cause and restore normal performance as quickly as possible.

We have identified the root cause of the issue. Our team is actively implementing a fix. We will provide further updates as we make progress.

A fix has been deployed and we are monitoring the results. Customers might need to clear browser cache and close all opened tabs with TMS if still experiencing problems.

The issue has been resolved and performance is stable.

We are currently experiencing intermittent errors when communicating with Gengo, one of our third-party translation vendors. This is causing timeouts and 502 errors on price calculation and order submission for translation orders routed through Gengo, affecting both EU and US data centers. Gengo has confirmed the issue on their end and is investigating.

Gengo has resolved the underlying issue on their end. Price calculations and translation order submissions to Gengo are now working again.