WOPI unlock call | PutFile call delay - never gets triggered in chrome and latest edge browser - Fixed with OOS 2021 June 3 Security Patch

Hung-Chun Yu 976 Reputation points Microsoft Employee

This is a known issue where Chrome is deprecating Sync XHR on Oct 22 2019, affecting WAC's ability to unlock file and shutdown gracefully. At this time, no timeline when a fix will be ready.

Per Chrome, https://www.chromestatus.com/feature/4664843055398912
Disallow sync XHR in page dismissal - Chrome Platform Status
Chrome now disallows synchronous XHR during page dismissal when the page is being navigated away from or closed by the user. This involves the following events (when fired on the path of page dismissal): before unload, unload, page hide, and visibility change.

First option, a temporary opt-out is available via Origin Trial "Allow Sync XHR In Page Dismissal": https://developers.chrome.com/origintrials/#/trials/active

There are two OOS Updates.
Update for Office Online Server: April 14, 2020
Update for Office Online Server: July 14, 2020

With this update, issue has been solved for Word.

Microsoft still are working on solution for Excel and Power Points. No ETA at this time. Do follow this post to get latest update.

Related Original Posts from MSDN Developer Network Forum




Office Open Specifications
Office Open Specifications
Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Open Specifications: Technical documents for protocols, computer languages, standards support, and data portability. The goal with Open Specifications is to help developers open new opportunities to interoperate with Windows, SQL, Office, and SharePoint.
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  1. Hung-Chun Yu 976 Reputation points Microsoft Employee

    Make sure to download Security Update for Microsoft Office Online Server (KB5001999) farm-deployment dated 2021 Sept 9 from following site https://www.catalog.update.microsoft.com/Search.aspx?q=Office+Online+Server

    Do follow the steps outline here Apply software updates to Office Online Server

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  1. Jian An Lim 1 Reputation point

    Any update since?

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  2. Hung-Chun Yu 976 Reputation points Microsoft Employee

    Hi JianAn

    There is no update yet.

    HungChun Yu
    Microsoft Open Specifications

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