This article lists common reasons why the “Couldn’t verify subscription” errors appear when you try to start Office 365 (Microsoft 365) apps (Word, Excel, Outlook, etc.). The article is based…
Microsoft 365
- ExchangeMicrosoft 365Office 365Outlook
Outlook: The Name Cannot Be Matched to a Name in the Address List
March 3, 2022In some cases, when you try to connect a new mailbox hosted on an on-premises Exchange Server or Microsoft 365 (Exchange Online), Outlook shows the following error after you enter…
- ExchangeMicrosoft 365PowerShell
Search and Delete Emails from User Mailboxes on Exchange Server (Microsoft 365) with PowerShell
February 24, 2022In Exchange Server, you can use the Search-Mailbox or New-ComplianceSearch PowerShell cmdlets (available in newer versions of Exchange Server and Exchange Online/Microsoft 365) to search for and delete email items…
- AzureMicrosoft 365PowerShell
Checking User Sign-in Logs in Azure AD (Microsoft 365)
February 20, 2023In this article, we’ll show you how to get the last login date and sign-in activity of your Azure Active Directory users, export and analyze Azure sign-in and audit logs…
- ExchangeMicrosoft 365PowerShell
Mailbox Size and Quotas in Exchange 2019/2016 and Microsoft 365
February 20, 2023An on-prem Exchange or cloud Exchange Online (Microsoft 365) administrator must control user mailbox sizes. In this article, we’ll show how to get current mailbox sizes and set mailbox quotas…
- ExchangeMicrosoft 365OutlookWindows 10Windows 11
Fix: Microsoft Outlook Search Not Working on Windows 10/11
January 14, 2022If you face any troubles when searching for email items in different Outlook versions (nothing is found, not all results are displayed, not all *.pst files used for search, not…
- ExchangeMicrosoft 365PowerShell
Forwarding Emails to an External Address in Microsoft 365 (Exchange Online)
September 15, 2023By default, cloud-based Exchange Online (Microsoft 365) prevents automatic external email forwarding using Outlook rules or enabled mailbox forwarding.
- Microsoft 365MS OfficeOffice 365OutlookTeamsWindows 10
Blank Sign-in Screen in Office 365 Apps (Outlook, Teams, etc.)
January 10, 2022Some Windows 10 users complain that when launching Office 365 apps (Outlook, Teams, Word, Excel, etc.) or Outlook 2019/2016 (with Exchange Online mailbox), a blank white sign-in screen appears when…
- ExchangeMicrosoft 365PowerShell
Managing Mailbox and Folder Permissions in Exchange and Microsoft 365
February 10, 2023In this article, we will show how to manage mailbox or folder access permissions in on-prem Exchange Server and on Microsoft 365 (Exchange Online). Methods and PowerShell commands to manage…
- Group PoliciesLinuxMicrosoft 365PowerShellTeamsWindows 10
How to Disable Microsoft Teams Auto Startup
June 8, 2023By default, when you install Office 365/Office 2019, all Microsoft Office apps are installed, including Teams (you can install only specific Office apps using Office Deployment Tool). MS Teams is…