Invitation Error for Non-Outlook.com Email Addresses in Outlook for Web Calendar
⚠️ This is an issue with: Outlook for the web On Window PC and iPhone Via the browser (Chrome + Safari) In a consumer edition of outlook(.live.com) ... but this new Microsoft Learn portal does not have this tag added and forces me to select…
Outlook | Windows | Classic Outlook for Windows | For business
Problem solving sending annexes with outlook
Since a few days, I'm not able anymore to send any attach (word, excel, pdf) through outlook which is extremely annoying here the last mail with PDF that I try to send earlier today Uw bericht kan niet worden bezorgd bij de volgende geadresseerden of…
Outlook | Windows | Classic Outlook for Windows | For business
Cant access Outlook on desktop or browser- Error Message
Any one know what this error message means or how to fix it? UTC Date: 2025-07-03T13:19:03.975Z Client Id: EAB42F700FC44B0EBCFD4D3C2E613F8A Session Id: 9e85920e-6162-41b1-ac7c-aecd89ae27fe Client Version: 20250620014.18 BootResult: configuration Back…
Outlook | Windows | Classic Outlook for Windows | For business
Delete hotmail account that I cannot sign into to
I cannot sign into my hotmail account and have subscriptions that are linked with that e-mail that I wish to get rid of. Since I created a new account, I wish to delete the hotmail account, but I cannot sign-in and trying to recover has not worked. I…
Outlook | Windows | Classic Outlook for Windows | For business
Outlook Desktop suddenly became very slow
I'm using Classic Outlook Destop Microsoft 365 version 2506. My Outlook Desktop became very slow since about 3 days. I didn't change any settings. I need help because it's becoming unusable… Also, when I select a mailbox, in the top right corner of the…
Outlook | Windows | Classic Outlook for Windows | For business
Outlook is switching from focussed to read and unread.
When I open Outlook the inbox for my 365 account shows as 'Focussed' and 'Other' in conversations mode, which is how I want to use it. Under the 'View' tab, the 'Show focused inbox' button is present and checked. If I switch modes, or search, etc., the…
Outlook | Windows | Classic Outlook for Windows | For business
Location search is not working in Outlook calendar
The location search feature in Outlook calendar has recently stopped working on my Windows 11 laptop. It does not work in the Outlook App or in browser mode.
Outlook | Windows | Classic Outlook for Windows | For business
Location Suggestions not loading
Hi, I have a user who is having issues with her location Suggestion not loading when trying to book a meeting. She gets the below and it stays like that for a long time. When I try on my Outlook I have no issues with loading up the available rooms. …
Exchange Online
Outlook | Windows | Classic Outlook for Windows | For business
Microsoft 365 and Office | Install, redeem, activate | For business | Windows
Windows for business | Windows Client for IT Pros | User experience | Other
How to fix "This message couldn't be delivered because the sending email address was not recognized as a valid sender" error
When trying to send an email, I receive an error message stating "This message couldn't be delivered because the sending email address was not recognized as a valid sender. The most common reason for this error is that the email address is, or was,…
Outlook | Windows | Classic Outlook for Windows | For business
Exchange | Exchange Server | Management
outlook, won't send messages through my gmail account.
I have used my G-mail address <removed PII> though Outlook for several years and have not changed my settings. What happens is that mails sent from the <removed PII> address stay in the outbox. The progress bars take a long time to finish…
Outlook | Windows | Classic Outlook for Windows | For business
Outlook Classic Teams Meeting Invite not shown as HTML Format
Anyone has any idea the Teams Meeting invite creation showing as text instead of html format? I have tried Quick Repair, Online Repair, Reinstall outlook, Reinstall teams. Create a Teams meeting in Teams Calendar works with the usual format but when…
Outlook | Windows | Classic Outlook for Windows | For business
Android Outlook authentication POP SMTP unable to log-in
When trying to update my POP3 SMTP password on Android Outlook, I get an authentication error "unable to log-in". How to fix this?
Outlook | Windows | Classic Outlook for Windows | For business
Rejected emails with attachments
All my outlook emails with attachments are recently being rejected and returned as not delivered because attachment is considered spam. I continually send emails with attachments to the same persons (some outlook, some yahoo) without problem. This…
Outlook | Windows | Classic Outlook for Windows | For business
Outlook trusted sender list isnt updating new entries
Hi, A user reported that our replies from servicedesk always being moved to the junkmail folder. After some looking over rules and settings, i found that he uses strict junkmail rules and have a couple hundred trusted senders there. I have tried adding…
Outlook | Windows | Classic Outlook for Windows | For business

I have Outlook 2016, how do I get the annoying pop up messages telling me to enter my log in and password to stop?
Hi, please help!! I have Outlook 2016. How do I get the annoying pop up messages telling me to enter my log in and password to stop? This is blocking me from getting my emails. Thank you.
Outlook | Windows | Classic Outlook for Windows | For business
How transfer Outlook signatures from Office 2019 to Microsoft 365?
When I installed Microsoft 365, moving Office 2019, my signatures did appear in the Signatures and Stationary set up. So, I added my signatures and now when I right-click a signature in an email, each signature shows up twice. If go to the Signatures and…
Outlook | Windows | Classic Outlook for Windows | For business
my junk mail folder has disappeared
My junk mail folder has disappeared - I can't access it to make sure nothing important is in there, or to delete things.
Outlook | Windows | Classic Outlook for Windows | For business
Headers not downloading to Outlook
On one day, June 26th, all of my gmail email address that I admin for, had issues with select messages not downloading. They came in with no header, and the body was all html script. I verified the email is in gmail. I have tried resyncing, remapping,…
Outlook | Windows | Classic Outlook for Windows | For business
Locked out of email
My hotmail account was hacked a month ago and Microsoft locked my email. I've been verified as the owner six times in reviews I've sent to Microsoft but a link in a seperate email to regain access to my email never came as promised so I am still locked…
Outlook | Windows | Classic Outlook for Windows | For business
Is the email ******@microsoftsupport.com a genuine support email or a scam?
Hi there, I have currently lost over 3 years of hotmail emails received in my inbox and was receiving online help from Microsoft support but didn't accept remote help just incase it was a scam. I then received a follow up email from…