Microsoft Outlook is an application that is used to send and receive emails. It is very popular among Corporate Companies because of its reliability and various types of usage. Outlook can also be used to manage various types of Personal data like calendar appointments, Contacts, mails, and Notes. Microsoft released several versions of Outlook since 1997 and it was included in MS office 97 as a package. Since then, Microsoft has released an abundance of updated versions, each offering more features than the one before it. Microsoft Outlook is included in many of the Microsoft Office application suites, including various versions of Microsoft Office 2010, 2013, and 2016, and Office 365. Installing and configuring Outlook is easy, once you got the office subscription you can download the office package and start the installation. After the installation, you need to configure Outlook most of the people find difficulties while configuring. Many users reported an issue while configuring Outlook for the first time. If you are facing any error like this “The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action” follow the below-mentioned resolution steps. Show
Solution 1: Check Your Internet settingsThe connectivity between your Outlook and Exchange server relies on the internet or LAN connection of your organization. Exchange mail server provides flexibility for sending emails, calendaring, voicemail transcriptions, scheduling, and tools to customize collaboration and messaging service applications. So, connectivity is mandatory while configuring Outlook. If there is any disturbance or hiccups in the internet connection, you may get above-mentioned error. Flush DNS settings: Sometimes the cache memory could cause this type of error, If the cache contains outdated data, then you might get “The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action” Error. The best way to resolve this issue is to Flush the DNS command.
ipconfig/flushdns Once the command executes Close the command prompt and try to connect with Microsoft Exchange server. Solution 2: Delete Default Outlook Profile
Solution 3: Create a New Outlook Profile
Solution 4: Update/Create your Outlook profile with RPC encryptionThe remote procedure call (RPC) communication channel between an Outlook client computer and an Exchange server is not encrypted. If a malicious person is able to eavesdrop on the network traffic between Outlook and the server, they might be able to access confidential information.
Solution 5: Fix The connection to Microsoft Exchange is unavailable using RegistryThis error may occur due to some registry corruption, Registry holds the necessary information that Outlook uses in order to access Microsoft Exchange. If Your registry got corrupted and lost the information then you’ll get The connection to Microsoft Exchange is unavailable. Fix the Registry key manually by following these steps. Choose any working Computer and Follow the below-mentioned steps
Now Navigate to the following path. HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\ExplorerUser Shell\ Folders
Solution 6: Restart Microsoft Exchange Services
Note: If you have more than one Microsoft Exchange Service make sure to restart them all. Solution 7: Disable the encryption requirement on all CAS serversIf you are a IT admin then you can use this method, Microsoft warns that it should be only used where you cannot immediately deploy the necessary RPC encryption settings on Your outlook clients.
Set-RpcClientAccess –Server –EncryptionRequired:$False This command only applies if you are running Exchange server 2010 or later version. Solution 8: Group Policy Setting to update Existing Outlook Profiles with RPC EncryptionOn the server-side you have to change the RPC settings by using Group Policy settings. Open Run Command by pressing Windows + R and type gpedit.msc and hit enter this will open the group policy editor. Navigate to the following location. User Configuration > Administrative Templates > Microsoft Office “Version number” > Account Settings > Exchange Now locate Policy Enable RPC Encryption and disable it. I hope these solution might be helpful for you. How do you fix the connection to Microsoft Exchange is unavailable Outlook must be online or connected to complete this action?To fix The connection to Microsoft Exchange is unavailable error on your PC, try the following suggestions:. Edit registry.. Update your Outlook profile.. Create a new Outlook profile.. Delete your Outlook profile.. Use flushdns command.. Restart Microsoft Exchange services.. Disable your antivirus.. How do I fix Microsoft Exchange server is unavailable?Fix – The connection to Microsoft Exchange is unavailable. Edit your registry. ... . Update your Outlook profile. ... . Create a new Outlook profile. ... . Delete your Outlook profile. ... . Use flushdns command. ... . Restart Microsoft Exchange services. ... . Disable your antivirus. ... . Set the WINS IP addresses on your PC.. How do I fix Microsoft Exchange Connection in Outlook?Choose Account Settings > Account Settings. On the Email tab, choose your account (profile), and then choose Repair. Note: The Repair option isn't available if you're using Outlook 2016 to connect to an Exchange account. Follow the prompts in the wizard, and when you're done, restart Outlook.
Why is my Outlook not connecting to the Exchange server?Ensure Outlook is online
This is important because, in the offline mode, Outlook can't connect to the Microsoft Exchange servers, and thus, will throw the “Outlook cannot connect to server” error. To fix this: Go to the Send/Receive tab in Outlook. Look for an option called “Work Offline” and click it.
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