Products
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
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 Remove duplicate emails, calendars, contacts, journal etc. from Office 365 and Exchange
- GAL and All Address Lists migrationDirectly migrate Exchange and Office 365 Global address list and Address Lists items
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Blog » Exchange Migration

The Exchange server version is invalid or is unavailable

Problem:

The Exchange server version is invalid or is unavailable.

Solution:

The reason for this error may be invalid credentials that you have used to access the mailbox or Over utilization of resources.

Ensure that you have used the correct email address and password that you are trying to access. Enter the appropriate credentials and try to login once again.
Open OWA URL from an external network and verify whether it loads the page within the required time or not. If it meets the requirement, then check for the server resources parameters like CPU usage, memory usage etc. Also the network utilization crosses the limitation is also a cause for this error. So avoid the migration of too many mailboxes simultaneously. Split the migrations.

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