EdbMails EDB Recovery and Migration software
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    Exchange EDB / Email Recovery Tools
    • EDB Recovery and MigrationRecover EDB to PST, EDB to Office 365 and Exchange NO Duplicate Migration
    • OST Recovery and MigrationRecover OST to PST, OST to Office 365 and Exchange Migration
    • PST Recovery and MigrationRecover Outlook PST, PST to Office 365 and Exchange Migration
    • MBOX Export and MigrationExport MBOX to PST, MBOX to Office 365 and Exchange Migration
    • NSF Export and MigrationExport NSF to PST, NSF to Office 365 and Exchange Migration
    • EML to PST ExportEML files export to Outlook PST format
    • PST to MSG ExportOutlook PST files export to MSG format
    Exchange and Office 365 Migration
    • Exchange Server MigrationMigrate Exchange 2007, 2010, 2013, 2016, 2019 to Office 365 tenants. Also, migrate between Exchange servers and PST
    • Office 365 MigrationMigrate Source Office 365 tenants to Destination Office 365 tenants. Also, migrate to Exchange Server and PST
    • IMAP Email Backup & MigrationMigrate all IMAP email servers (Gmail, Zimbra, Zoho, Yahoo etc.), Office 365, Exchange and Backup to Outlook PST
    • SharePoint Online MigrationMigrate documents, files and folders from SharePoint sites
    • OneDrive for Business MigrationMigrate documents, files and folders from OneDrive
    • Microsoft Teams MigrationMigrate Teams, documents, files and folders etc.
    Exchange and Office 365 Backup
    • Office 365 BackupIncremental, Granular, Encrypted and Compressed Office 365 Mailboxes Backup
    • Exchange Server BackupIncremental, Granular, Encrypted and Compressed Exchange Mailboxes Backup
    • SharePoint, OneDrive & Teams BackupBackup Online site collections, Team sites, Office 365 groups, all documents etc.
    • Duplicate Remover - Office 365, Exchange & IMAP Remove duplicate emails, calendars, contacts, journal etc. from Office 365, Exchange & IMAP
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Blog » Login - Exchange, Office 365 and more
Problem

404 Not Found

This error may appear due to following reasons

Note: Office 365 Business licenses don’t include Exchange.

  • Invalid credentials.
  • The admin account doesn’t have the sufficient permissions to login to the target server
  • Mailbox Email address is not the Primary SMTP address

    The primary SMTP address must be specified when referencing a mailbox.

  • Wrong license.

Solution

  • Check the credentials by logging into the OWA.
  • Try to log in to the target mailbox with the admin credentials.
  • Ensure that the email address specified is the primary SMTP address for the end user.
  • If admin credentials are used ensure that the SMTPS has sufficient rights.
  • Check the authentication settings.

Related topics:

  • Do I need to set Impersonation Rights to each and every user account
  • Invalid user or password
  • Unexpected XML Content
  • Error: ErrorInvalidSerializedAccessToken
  • ErrorQuotaExceeded
  • Could not map Exchange web service folder - Error
  • Free/Busy status migration
  • Steps to recreate Outlook profiles after the migration
  • How to allow PowerShell to connect to Exchange Server via IP address?
  • Connect to Exchange server via PowerShell
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