Enabling Hybrid Modern Authentication - Change to Window 10 Outlook client authentication flow?
We are looking to enable HMA to allow secured external access to Exchange on prem for iOS and Windows 10. iOS isn't a problem here, we understand the change to end user experience. For Windows 10, Outlook currently tunnels through a VPN to CAS. Users…
Outlook | Windows | Classic Outlook for Windows | For business
Exchange | Exchange Server | Management
when I send emails from android I received the email in LTR instead RTL
Hi, I have a problem when I send emails from android with outlook application, the message received in left to right instead of right to left. its happen only if I send email from outlook application on my mobile, when i send from "owa" or my…
Outlook | Windows | Classic Outlook for Windows | For business
Outlook Asking For "ChangeKey" upons clicking "Send"
How to fix? I have a user, under Office 365, who just reinstalled Office from their account last week. Today, after clicking 'reply' to an email and then clicking 'send', they see the following message, "This message can’t be sent right now. …
Outlook | Windows | Classic Outlook for Windows | For business
How do I update my phone number so that it appears in the GAL?
We are using Exchange Online and our users would like to know how they can change their phone numbers so that it appears in the GAL through the outlook 2016 client. https://myaccount.microsoft.com/ does not allow changing any contact details.
Exchange Online
Outlook | Windows | Classic Outlook for Windows | For business

Outlook search not working for some emails and BigFunnelCorruptedCount is large.
I need to understand why some of my clients have a growing BigFunnelCorruptedCount. My company has created software that will rewrite emails and insert the rewritten version in the user's mailbox. The rewritten emails are sometimes unsearchable and this…
Outlook | Windows | Classic Outlook for Windows | For business
Exchange | Exchange Server | Management
Outlook 0x80040115 / RPC_E_ACCESS_DENIED error (0x5)
This has been an ongoing issue with Outlook often not able to connect and generating 0x80040115 when manually attempting to send/receive. It has been very difficult to troubleshoot because how intermittent it is. If I leave it alone for a few minutes,…
Outlook | Windows | Classic Outlook for Windows | For business
Exchange | Exchange Server | Management
After CU23 & Zero Day patch - Outlook clients constantly prompted for password.
Hello, We are running Exchange 2013 (Cumulative Update 23 (CU23)). CU23 was recently installed, along with the Zero Day Patch. The following day, we have been receiving reports that all users are being prompted for credentials frequently…
Outlook | Windows | Classic Outlook for Windows | For business
Exchange | Exchange Server | Management
Why is there no way to create an Outlook Mobile Contact?
I do understand the issues around Outlook contacts and the mobile contact duplication. Currently on my IOS device, I have one source of mobile email - Outlook Mobile. Coming from a Microsoft background, I've always kept my contacts in a hosted…
Outlook | Windows | Classic Outlook for Windows | For business

Getting dialog box from outlook - another program is trying to access email addresses stored in outlook
just started to occur this morning, have isolated it to a MS AV upgrade, have an ms access vba perform a blast email, must accept to continue !100763-screenshot-2021-05-29-172114.jpg \
Microsoft 365 and Office | Access | Development

Outlook | Windows | Classic Outlook for Windows | For business
Developer technologies | Visual Basic for Applications
Outllook Autocomplete List Showing Up Towards Top of the screen
I'm using outlook 2019 desktop version. When I write a new email and start typing a contact the autocomplete contact list window appears ABOVE the field "To:" and I can't read all of the addresses (the window is not inside the screen). How…
Outlook | Windows | Classic Outlook for Windows | For business
inbox of selected item (which maybe a group account)
I have a piece of someone else's code that moves emails into an archive folder, but this is moving emails from and group accounts into the personal inbox of the person performing the action. I would like to update the code to use the folder in the…
Outlook | Windows | Classic Outlook for Windows | For business
Developer technologies | C#
Exchange 2019 Distribution Group Owners Can't Edit Members
We have made a migration from four onPrem Exchange 2013 servers to four new Exchange 2019 servers. After the migration Distribution Group Owners can't edit members from Outlook. If the mailbox is in a database on a specific server, it works. But not for…
Outlook | Windows | Classic Outlook for Windows | For business
Exchange | Exchange Server | Management

Authentication in request send by web add-in to REST service
Hi. I made web add-ins that make requests to a REST service with AJAX. Everything works perfectly in debug as long as the operation is in HTTP. But the ADD-IN and REST service codes must be exposed on the web to work in HTTPS even using outlook…
Microsoft 365 and Office | Development | Other

Outlook | Windows | Classic Outlook for Windows | For business
Outlook Microsoft Store. ExcludeExplicitO365Endpoint
Hi. We have Microsoft Office Home and Business 2016(From Microsoft Store), 2016,2019 Standart. a couple of days ago, outlook began to ask for a username and password from a Microsoft Office365 account Fixing Registry Key ExcludeExplicitO365Endpoint…
Outlook | Windows | Classic Outlook for Windows | For business
Outlook Rule Exception
I have a Rule that moves email to a specific folder based on the following subject text: Information Request To not filter any RE: or FW: messages to the same folder I added the following subject text exception: : Information Request The intent…
Outlook | Windows | Classic Outlook for Windows | For business
If user is in Cached Exchange mode and only downloads the last x days of emails, and they try to file old emails using our company application none of the old emails will file.
As a workaround if we set MDB_ONLINE in OpenMsgStore the old emails are fetched to the folder. So my question here is will there be performance impact as the flags override the connection to the local message store and open the store on the remote…
Exchange Online
Outlook | Windows | Classic Outlook for Windows | For business
Microsoft 365 and Office | Install, redeem, activate | For business | Windows
Outlook emails appear twice
Hi One of our users has been reporting this issue for a while now. Every few days, the emails they have in their inbox or in any of the subfolders get repeated. We have cache mode turned on for 3 months, and this user does not leave any emails in…
Outlook | Windows | Classic Outlook for Windows | For business
How can I connect outlook to my imap server and authorize via oauth?
Hello. I need to connect outlook to my imap server and authorize using oauth2 protocol. But when I trying add account in outlook I can't choose oauth authorization method. I have a configured imap server (dovecot), keycloak and ldap server…
Microsoft 365 and Office | Development | Office JavaScript API

Microsoft 365 and Office | Development | Other

Outlook | Windows | Classic Outlook for Windows | For business
Microsoft Teams | Development
Could not add O365 account via new profile in Outlook 2016
Had this issue again which caused major headaches. Stemmed from the fact that the user had previously set up a Microsoft account using their business email address. After setting up Office365 for them they could not authenticate. Got them to change their…
Outlook | Windows | Classic Outlook for Windows | For business

Email signing from Outlook with own provider
I have to implement my own KSP for signing, from different application. The Word signing, works well with OpenProvider, OpenKey, ExportKey, SignHash, FreeKey, FreeProvider process. But the Outlook works a little different OpenProvider, OpenKey,…
Windows development | Windows API - Win32
Outlook | Windows | Classic Outlook for Windows | For business
Microsoft Partner Center API
