Cached Exchange Mode Sync Settings
Supported on: At least Windows Server 2008 R2 or Windows 7
Registry
HKCU
software\policies\microsoft\office\16.0\outlook\cached mode Options
syncwindowsetting enum - Three days
->
0 - One week
->
0 - Two weeks
->
0 - One month
->
1 - Three months
->
3 - Six months
->
6 - One year
->
12 - Two years
->
24 - Three years
->
36 - Five years
->
60 - All
->
0
Description
This policy setting allows you to configure the amount (by date) of user email Outlook synchronizes locally using Cached Exchange Mode. If you enable this policy setting, you can specify the time-window of email messages that Outlook synchronizes to users' computers. The options you can select are: 3 days, 1 week, 2 weeks, 1 month, 3 months, 6 months, 1 year, 2 years, 3 years, 5 years, and All. If you disable or do not configure this policy setting, Outlook synchronizes the last 12 months of email messages to users' computers.