After installing CU 10 Exchange 2019- OWA and ECP Websites Blank After Logon

asked 2021-11-04T11:16:12.983+00:00
Al Amran 326 Reputation points

After installing CU 10 Exchange 2019 and its security patch– OWA and ECP Websites Blank After Logon

I have followed below URL already,

https://www.petenetlive.com/KB/Article/0001185

https://support.microsoft.com/en-us/topic/you-get-a-blank-page-after-logging-in-eac-or-owa-in-exchange-2013-or-exchange-2016-a24db2f2-4d67-806b-670b-efb8f08605f7

I have checked the Default Web site & the Exchange Back End Certificate are in-place.

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. answered 2021-11-05T02:13:49.177+00:00
    Joyce Shen - MSFT 16,306 Reputation points Microsoft Employee

    Hi @Al Amran

    Could you please check the application log recorded in Event Viewer to see if any error?

    And also make sure you download the SU with correct steps(using elevated Command Prompt window (not PowerShell) as an administrator)
    Sometimes the installation of SU may cause the certificate error which will lead to Can't sign in to Outlook on the web or EAC if Exchange Server OAuth certificate is expired

    Here is an official document introduces about various errors we may encounter after we install CU and SU: Repair failed installations of Exchange Cumulative and Security updates


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