SharePoint 2016 Server - mquery.js event deprecation

Duarte_Sousa11You have brought to my attention an important issue regarding the mquery.js library used in SharePoint 2016 and 2019 on-premises servers. This library contains deprecated mutation events that will be removed from Google Chrome starting with version 127, scheduled for release on July 30, 2024.

While the SharePoint Product Group had initially planned to address this issue with a patch or update, recent communications from Microsoft Support indicate that a fix will only be implemented in the September 2024 Cumulative Update for SharePoint Server Subscription Edition, leaving SharePoint 2016 and 2019 versions potentially vulnerable.

This news is concerning, as it could potentially break functionality for customers still running these older SharePoint versions after the Chrome update. To mitigate this risk, I'll take a proactive approach. First, I'll thoroughly test the impact of disabling mutation events in Chrome by leveraging early release versions or manually disabling the feature.

This will help identify any potential breakages in our SharePoint environment. Simultaneously, I'll escalate this issue with Microsoft Support, demanding a clear understanding of the business impact and exploring potential workarounds if a fix is not provided for SharePoint 2016 and 2019. I'll also investigate alternative solutions or third-party tools that may be able to replace or work around the functionality provided by the mquery.js library. If the impact is deemed significant and no satisfactory workaround is available, I'll initiate discussions with stakeholders regarding the possibility of upgrading to a newer version of SharePoint Server that will receive the necessary updates to address this issue.

Throughout this process, I'll maintain open lines of communication with Microsoft Support, ensuring they understand the criticality of this issue for our organization. Additionally, I'll provide regular updates to keep you informed of our progress and any new developments or recommendations from Microsoft. Rest assured, I am committed to mitigating any potential risks or disruptions caused by the removal of mutation events in Chrome version 127.

My aim is to implement a comprehensive solution that safeguards the functionality of our SharePoint environment while minimizing any impact on our users and business operations.