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

Question

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.

Answer 1

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

---

If an Answer is helpful, please click "Accept Answer" and upvote it.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.