What Is Outlook Cached Exchange Mode?


Author: Albert
Published: 2 May 2022

Using Exchange Mode to Connect Microsoft Outlook

Microsoft Outlook can connect with Exchange in two different modes. When an Exchange account is configured in Outlook, it connects to the Exchange server in Offline mode with the option to use cached exchange mode. Outlook 2003 has a cached exchange mode.

It is supported by Outlook 2007, 2010, 2016, and 2019. The preferred mode is the cached exchange mode. Outlook does not show an error if the system experiences network issues.

Users can work when online or offline. It is advisable to use the mode for high network connection times. If Outlook doesn't get a response from the server within 100 ms, it will display error messages.

You can use cached exchange mode to overcome these issues. You can use an OST to PST software to extract mail items from an inaccessible OST file and save them to Outlook importable PST format. When you add an Exchange or Microsoft Office365 account to Microsoft Outlook, you'll be able to use the cached Exchange Mode.

You can enable or disabling the mode based on your current needs. Outlook users use the mode to get a seamless experience. Outlook has a default mode called Cached Exchange Mode.

Cached Exchange Mode in Outlook

A user cannot open an inaccessible file. ScanPST can check for corruption in the OST file, but it is not good enough to retrieve data from inaccessible files. You need to use professional software.

The software for restoring data from the OST files is called the Kernel for OST to PST Converter. It can recover the data, provide the preview, and save it in multiple formats, including the PST file. Outlook has a feature called cached exchange mode that facilitates offline working.

Work Offline is Unavailable in Outlook

If the Outlook is online, it is impossible to use the feature Work Offline. The offline data file was created to access the mailbox if the cached mode is enabled.

Outlook Online Mode

The purpose of the mode is to provide a seamless Outlook experience. It's designed to help users avoid network issues while using Outlook. Online Mode is the second type of Exchange connection.

Online Mode requires a connection to work, as the name implies. Mailbox data is never written to disk. You can enable Online Mode by disabling Exchange Mode.

Using Caching Mode in Outlook to Connect with Exchange Server

The Exchange server needs a special connection mode to make it easier to manage the content in the mailbox and make the sync between the two applications. There are two scenarios in Outlook that can be used to connect to Exchange server. The first and second modes are online and cached.

The Online Mode does not provide an offline copy of your mailbox. The active user will benefit from the cached mode. When Outlook is not connected with Exchange, you can access your data through the OST file, but you can't work on your mailbox.

If you have all the basic information about the mode, then you should make sure that the caching mode is enabled in your account as it will accommodate all the information all the time. Exchange server is a large application, so there are chances of delays. The data can be accessed without interruption if the data is in the cache mode.

Using the Mode to Work with your Microsoft Exchange mailbox

Use the mode to work with your Microsoft Exchange mailbox even if your network connection is slow. You can't use the mode with a POP or IMAP account. Work offline in Outlook can be seen if Outlook is stuck in Offline mode.

Online Mode and Exchange-Mode Configuration in Outlook 2016

Online Mode requires a connection to work, and uses information directly from the server. Mailbox data is never written to disk. Delivery options are in the online mode or in the client side.

Outlook must be connected and open at the assigned delivery time for delayed delivery messages to be sent. When using the mode, be aware of the users' local location. The mailbox size reported in Exchange server is not accurate.

The server data file format is more space- efficient than the local format used by Outlook. The maximum size for a toy. The files are changeable.

50 gigabyte of data storage is the default. Make sure that users are on the site. The files are located in a folder that has enough disk space to hold mailboxes.

The majority of users find that the online mode performs better than the cached exchange mode. The factors that can affect a user's perception of Exchange Mode performance are hard disk size and speed, and the amount of time spent on the computer. The expected level of performance is related to the file size.

Cached Outlook365

If you notice that Exchange Online Outlook365 is slow, you may need to adjust your settings so that you can run in cached mode and have more mail in your local area.

Outlook application cannot open the distant file

Outlook application has two modes to link with the exchange server, one is online and the other is cached. The local device named as the OST file is where the carbon copy of users mailbox items are created. Outlook application can't open the distant file.

Users only have the option of converting a damaged file into a PST format. If you are looking for a reliable and expert tool for your OST file, you should use a professional tool like Recovee. It can recover complete data without much hassle.

Using Cached Exchange in Outlook

Outlook has made a huge impact on the market and is now the desktop client of all the organizations or business enterprises because of its proper management of personal information. The simple interface of Outlook makes it more attractive to users. The mode allows for working with the server through the Outlook.

Users can work with mails attached to the server even without a network once the configuration is done. When Outlook is configured with the Exchange server in a mode called cached exchange, OST files are created in the Outlook. The Exchange server has a replica of mailboxes in the offline files.

The mode allows you to go through the mailbox even if the server is offline. Outlook will check for the connection or disconnection if the server is not available. When the connection is restored, it will load all the changes that are carried out and the data will not be lost.

The users can decide if they want to enable the mode. It is up to them to enable or disabled Outlook Exchange mode. There is a note.

The procedure for disabling and enabling the cached exchange mode is the same in all Outlook versions. The steps are similar in Outlook 2013 but not for Outlook 2010 like 2007, 2003 or even 2011. The account settings will be chosen from the tool tab of the Outlook.

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Exchange Server Experience with Cached NST

The NST file contains all mailbox data. Outlook is sync with Office365 account and the data of NST file is also stored on the local system. The Exchange server experience is greatly improved by using the option of cached exchange mode.

Users can enable the feature with the help of steps explained in the post. The user has an issue with the NST file. The post explains how to remove corruption in NST file.

Cache Mode on Outlook

We found that large mailboxes in Office365 require us to run with cache mode on in Outlook. There is a noticeable delay with almost every action.

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