How to Fix the Connection to Exchange Server is Unavailable Issue?

Published By Siddharth Tehri
Published On November 6th, 2017
Reading Time 3 Minutes Reading
Category Exchange Server

It may possible that you have encounter “Exchange Server is not available or Exchange is Unavailable in version such as 2007, 2010, 2013, 2016” while you trying to connect Outlook or Office 365. Read this blog to fix exchange server not available in any version. It suggest the best method to fix it all.

Technical Overview of Microsoft Exchange Server Not Available Issues

Microsoft Exchange server is the mail & calendaring server developed by giant software company Microsoft Inc. It provides simple and easy connectivity with widely used email client Outlook via cache exchange mode. But some time you may experiences that Microsoft exchange server not available or connection to Microsoft exchange is unavailable. You may also get error Microsoft Exchange Server is unavailable. While attempting to connect Microsoft Outlook in Office 365. As a result of which you are not able to access any data, mailboxes or stored items. Therefore, it need to fix as early as possible to reduce downtime and accessibility of data. Let’s discuss the root cause of failure of exchange server in brief.


The Root cause of Exchange Server is Unavailable

  • The Outlook Profile may configured incorrectly
  • The network connection might be issue
  • Outlook Profile manually configured
  • The default gateway configuration missing in client application
  • Low network connection bandwidth or internal breakage

Also Read: How to Fix Exchange Server dirty Shutdown error

Know how to fix Exchange Server is not Available to Connect

# Solution 1:

Disturbance in Network Connectivity

1. The abnormal network connectivity is one of the major cause of exchange server not available error.
First you need to check connectivity issue between client application and the exchange server. For this you can use client version of utility provide by Microsoft named as Microsoft’s Connectivity analyzer tool kit.

Quick guide to check connectivity using Utility

  • Download Remote connectivity kit from Microsoft site
  • Click on client button and then install now button.
  • Then after choose I cannot log on with Office Outlook option
  • Enter your SMTP(Simple Mail Transfer Protocol) address and login credentials to connect it with.
  • It also provide option to save result for future references.


exchange server is not available

2. If the exchange connectivity analyzer tool does not sense any issues then you need to create new Outlook profile for single mailbox in exchange server

3. On creating Outlook profile again, the problem further persists and multiple user get affected. Then in such case you need to contact official Microsoft support with complete issues and no user affected etc.

# Solution 2:

Third Party Applications Conflict Causes Exchange is Unavailable Error

Many times third party applications such as Antivirus and other similar applications interrupted in smooth connection of exchange server with outlook. Then in such case you need to start Outlook in safe mode. By opening Outlook in safe mode you are not able to access any plug-ins. If the exchange server not available error remains there. Then you need to take help of any professional solution


Due to Exchange server is not available error, the exchange database failed to mount. Then in such case a professional third party solution is only requirement to fix exchange server not available issue in quick time. Exchange EDB File Recovery Tool is one such solution. It is quire feasible & dynamic in nature to tackle exchange server issues. The software export recovered items in popular file formats which can be easily accessible in any email client. It supports exchange server version 2007, 2010, 2013, 2016 and all Outlook versions. Download software for free

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