This key isn't exposed in the Office.ADMX files for some reason, but it does work. Windows 10 1607. I've tested it myself in Outlook 2010 and 2013 on Windows 7, 10, 2008, and 2008 R2. Anecdotal internet evidence says it should work fine for Outlook 2016, as well, and on any Windows version. I haven't had a chance to test with Outlook 2007.
Where is 14.0 for Outlook 2010, 15.0 for Outlook 2013, or 16.0 for Outlook 2016. Note that we're in HKLM here, so it will be a system-wide setting, instead of HKCU, which is where the GPO would use the same key for the user-specific setting. Sep 25, 2020 Turning Off Cached Exchange Mode in Outlook Open Outlook, and from the tabs at the top click on File. Select the Account Settings drop down menu and then click on the Account Settings options. From the Account Settings double click on your email address. Under the Offline Settings header in the. Features - Modify user settings - then in the middle window, MS outlook 2016, account settings, exchange, cached exchange mode. And they're both there - on/off and the time syncing. I either missed it before (most likely) or it was only available today since I just copied the admx and adml files into this computer and then ran OCT. This key isn't exposed in the Office.ADMX files for some reason, but it does work. I've tested it myself in Outlook 2010 and 2013 on Windows 7, 10, 2008, and 2008 R2. Anecdotal internet evidence says it should work fine for Outlook 2016, as well, and on any Windows version. I haven't had a chance to test with Outlook 2007.
After migrating to Outlook 2016 from 2010, I noticed this inconsistency.
If you use secondary mailboxes in Outlook, you’re probably going to want them in Online Mode rather than Cached Mode. With Cached Mode on, you’ll have an OST file created for each extra mailbox you add, and you’ll hit performance issues if you have over 500 folders over all mailboxes added to the account.
One of the ways to avoid these performance issues is turning off ‘Download shared folders’ in the mailbox settings:
This can be done manually, or company wide with the Group Policy setting “Disable shared mail folder caching” found in User Configuration / Administrative Templates / Microsoft Outlook 2016 / Outlook Options / Delegates. Enabling this will disable and grey out the option as per the screenshot above.
However, I was previously doing this through a registry setting ‘CacheOthersMail’ under HKEY_CURRENT_USERSoftwarePoliciesMicrosoftoffice16.0outlookcached mode with the value set to 0. This worked on Outlook 2010 fine I believe, but in 2016 it did something slightly strange. Although clicking on a secondary mailbox’s folders showed they were in Online Mode with the status bar status of ‘Online’, the ‘Download shared folders’ tickbox was still enabled. I’ve confirmed this on both CTR and MSI versions of Office 2016.
At first I thought nothing of this, as it seemed to be working as intended. However, after a while I worked out that having it configured this way lead to performance issues, and people who had over 500 folders had cases where the inbox would stop updating. Changing the tickbox setting resolved the issue, despite the secondary mailboxes before and after this showing as ‘Online’. I didn’t dig into this any further so I can’t explain what was actually going on, but at a guess it was still doing some sort of sync or connection on each folder despite it being in Online Mode.
My advice is – make sure the ‘Download shared folders’ tickbox is off rather than just checking that the folders show as being ‘Online’. If you really need a secondary mailbox in cached mode but want to disable it by default, you could add it as a seperate mailbox account which will have it’s own cached mode settings.
How to enable or disable cached exchange mode in Outlook?
When using Exchange account in Outlook, you can enable or disable the cached mode for your own needs. Please do as the following tutorial shows.
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Enable or disable Exchange cached mode in Outlook
1. Open the Account Settings dialog box.
1). In Outlook 2010 and 2013, please click File > Info > Account Settings > Account Settings. See screenshot:
2). In Outlook 2007, click Tools > Account Settings.
2. In the Account Setting dialog box, select your exchange account that you want to disable or enable its cached mode, and then click the Change button under E-mail tab.
3. In the Change Account dialog box, please do as follows:
1). Upload voice memos to google drive. For enable the Cached mode, please check the Use Cached Exchange Mode box; Opera browser 10.6.8.
2). For disable the Cached mode, please uncheck the Use Cached Exchange Mode box;
3). Then click the Next button.
4. Then a Microsoft Outlook dialog box pops up, please click the OK button.
5. Then click the Next button in the following Change Account dialog box to finish the setting.
Turn Off Cached Mode In Outlook 2016
6. Now, restart your Outlook application to apply the new setting.
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- BCC Warning - show message when you try to reply all if your mail address is in the BCC list; Remind When Missing Attachments, and more remind features..
- Reply (All) With All Attachments in the mail conversation; Reply Many Emails in seconds; Auto Add Greeting when reply; Add Date into subject..
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