Therefore I assume, that the OAB was not updated. The commands are executed without any errors, but the Date/Timestamp is not updated on the file location. Get-offlineaddressbook | update-offlineaddressbook But we saw, that the oab.xml file in the location %ExchangeInstallPath%ClientAccess\OAB\ was last updated over 3 months ago. ![]() All of that seems to be configured correctly. We cross checked that with IIS and folder on the C-Drive. I read in the TechNet Forum, that the Error 0x80190194 is translated into a BG_E_HTTP_ERROR_404 ( ), which also means NOT FOUND.Īfterwards we checked the virtual directories of the OAB: Maybe this is related to the error message in the Outlook Client with Code 0x80190194. The paths looks like: When we try to open that path, we are prompted for username and password. All entries look good.įrom the tab "XML" we copied the "OABUrl", added /oab.xml to the URL and tried to open that path. We then executed the e-mail autoconfiguration. We also found out, that all users in the company have the same problem. We also used a different E-Mail box and client, but the same result, it is not working. We also removed that Outlook Profile and created a new one. When a user tries to download the OAB manully in outlook ( ), we get the following error message (0x80190194): The clients are using Microsoft Outlook 2019 MSO (9.20026) 32-bit on Windows 10. 012) DAG cluster with two servers (MAIL01 and MAIL02, Windows Server 2019). It is an on-premises Exchange Server 2019 (Build. Additionally there are further problems with generating a new OAB. Outlook cannot download the OAB (all users are affected). ![]() We have an issue with the Outlook Offline Address Book (OAB).
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