Notice: This website is an unofficial Microsoft Knowledge Base (hereinafter KB) archive and is intended to provide a reliable access to deleted content from Microsoft KB. All KB articles are owned by Microsoft Corporation. Read full disclaimer for more details.

Articles for product: Office 365 ProPlus

Article ID Article Title Hidden
2332495 Outlook can't connect through a proxy that's set up by using a file://–based PAC file
2391896 Email messages are sent to the wrong account when multiple accounts are associated with an Outlook profile
2784785 "550 5.1.1 RESOLVER.ADR.ExRecipNotFound" NDR error message when you send email messages by using Outlook in Office 365
2796317 Error message when an Office 365 user tries to access another user's mailbox folder in Outlook: "Unable to open default folders-you do not have permissions to logon"
2808268 Upgrading to Office 2013 or Microsoft 365
2809873 Available KB - Office 2013 set up error associated with "keep me signed in"
2823263 How to troubleshoot data loss prevention policy tips in Exchange Online Protection in Office 365
2826852 Error code 0x40 when you try to open Office 365 ProPlus applications
2826877 "The Office program has entered or may enter Reduced Functionality Mode (RFM)" warning when you open an Office Professional Plus program
2861179 "We couldn't find an account with that email address" error when you try to activate Office Mobile on iPhone or Office Mobile on Android
2861180 "No Subscription Found" error when you try to activate Office Mobile on iPhone
2905606 Cloud Partner support
2951074 You don't receive any confirmation after you successfully schedule a meeting or an appointment for an on-premises room mailbox in either Outlook client or Outlook Web App in Office 365
2962513 You can't view free/busy information on another user's Calendar in Exchange Online
2972952 Fix Outlook connection problems by upgrading to the latest version
3088463 Mainstream Support ends for Office Professional Plus 2010 for Office 365 subscribers
3205457 You can't access a shared calendar by using Outlook for a hidden mailbox
4020721 Office 365 ProPlus updates (April 20, 2017)
4076504 Changes to the Office 365 ProPlus system requirements (February 1, 2018)
4089865 Delegate can only see free/busy information in OWA when manager is in another forest during coexistence