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How To Disable Cached Mode In Outlook 2016 Registry: A Step By Step Process

admin | May 30th, 2018 | MS Office 2016

Cached Exchange Mode was introduced in Outlook 2003, provides users a smooth online and offline Outlook experience. It is used to improve the performance of the users that face connectivity issues and network latency while they are using Outlook. Outlook no longer depends on the continuous network connectivity to access the user’s information this is done by caching the user’s mailbox and the OAB locally with Cached Exchange Mode. Basically, Cached Exchange Mode creates a local copy of the mailbox data items stored on the Exchange server in an OST file format. This cached copy is accessed by Outlook for most of the operations speeding response times. Outlook continuously updates user’s mailboxes so that the user can get the updated information. If a user disconnects from the network, then also the latest Outlook is automatically available offline. The local and server data is synchronized by Outlook and the Exchange Server periodically. This helps to enhance the performance of Outlook when there is a slow internet connection. Therefore, in this post, we are going to discuss how to disable cached mode in Outlook 2016 registry.

Now, the question comes when cached Exchange mode is used? Some of the reasons are explained below:

  • Computer users who frequently move inside and outside of connectivity.
  • Persons who work offline or without connectivity.
  • Users who have high-latency connections (greater than 500 ms) to the Exchange Server computer.

How To Use Cached Mode In Outlook?

To enable cache mode one has to follow the steps given below:

  1. First, you have to click on the Start and then Run and then type regedit. You can also hold down the Windows key and press R and then type regedit for the same
  2. Now click on the OK button and click on the plus sign next to HKEY_CURRENT_USER
  3. After this, click on the Software > Policies and then click on Microsoft then Office
  4. Now, you have to click on 14.0 and then click on Outlook
  5. Click on the OST
  6. You have to right-click on the NoOST entry on the right and click Modify
  7. Now, you have to give it a value of 0
  8. Restart Outlook and use exchange mode option

Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\outlook\ost]
“NoOST”=dword:00000000
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\outlook\cached mode]
“Enable”=dword:00000001

Steps To Disable Cached Mode In Outlook 2016 Registry

One can disable cached mode in Outlook 2016 registry by following the steps given below:

  1. First, you have to click on the Start and then Run and then type regedit
  2. Now click on the OK button and click on the plus sign next to HKEY_CURRENT_USER
  3. After this, click on the Software > Policies and then click on Microsoft then Office
  4. Now, you have to click on 14.0 and then click on Outlook
  5. Click on the OST
  6. You have to right-click on the NoOST entry on the right and click Modify
  7. Now, you have to give it a value of 2
  8. Restart Outlook and use exchange mode option

Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\outlook\ost]
“NoOST”=dword:00000002
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\outlook\cached mode]
“Enable”=dword:00000000

For the users who works frequently offline or without connectivity, users who face latency issues with the Exchange Server for them this feature is essential. However, the system that uses large mailboxes on the computer and has low hard disk space for cache memory for them this feature is not required. For the systems that use Remote Desktop Services environments, this feature can be disabled. Moreover, this feature is not required on the heavily regulated or secure environments where local copied are not required to be saved. Mention steps will help to disable cached mode in Outlook 2016 registry.

Conclusion

The Cached Exchange Mode enhance the performance factor of users who face network latency or connectivity issues. But sometimes, the system does not require this feature. So, a user can disable cached mode in Outlook 2016 registry by following the steps explained in the above section.