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Office Online Server 2016 Troubleshooting: Unhealthy Status Reported

  • Article

Issue

New installation of Office Online Server 2016 on Windows server 2016 reports unhealthy status

Applies to

Version:16.0.10338.20039

Error:

Events

Event ID 20007

Log Name:      Microsoft Office Web Apps

Source:        Office Web Apps Monitoring

Date:          7/25/2020 5:31:14 PM

Event ID:      20007

Task Category: (10002)

Level:         Error

Keywords:      Classic

User:          N/A

Computer:      servername.domain.com

Description:

<?xml version="1.0" encoding="utf-16"?>

<HealthReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

 <HealthMessage>AgentManagerWatchdog reported status for AgentManagerWatchdog in category 'Recent Watchdog Reports'. Reported status: Machine health is Unhealthy</HealthMessage>

 <Severity xsi:nil="true" />

</HealthReport>

Event ID:      21383

Log Name:      Microsoft Office Web Apps

Source:        Office Web Apps Monitoring

Date:          7/25/2020 5:31:19 PM

Event ID:      21383

Task Category: (1)

Level:         Error

Keywords:      Classic

User:          N/A

Computer:     servername.domain.com

Description:

<?xml version="1.0" encoding="utf-16"?>

<HealthReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

 <HealthMessage>UlsControllerWatchdog reported status for UlsController in category 'Verify Trace Logging'. Reported status: Likely caused by shipping osipartner outputs from somewhere other than a devmain checkpoint. Trace string is found but the format is not correct in C:\ProgramData\Microsoft\OfficeWebApps\Data\Logs\ULS. **The following fields has the wrong format or content: [ Category ].</**HealthMessage>

 <Severity xsi:nil="true" />

</HealthReport>

Cause

ULS Log Formatting

Solution

Install the May 2019 KB4462169 to fix the issue.

However, installing the latest July 2020 update KB4484451 also fixes the issue and supersedes the May 2019 update.

  • Run Remove-OfficeWebAppsMachine
  • Installed the latest July 2020 update KB4484451
  • Rebooted the server
  • Created the farm using the below command,

New-OfficeWebAppsFarm -InternalURL "https://oos.domaincom" -ExternalURL "https://oos.domain.com " -CertificateName "OOS Cert" -EditingEnabled