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Preferred Salesforce Maintenance Schedule

Knowledge Article Number 000176208
Description

The following information regarding Salesforce’s maintenance windows is provided for planning purposes only and is subject to change at Salesforce’s sole discretion. There may be times that maintenance is scheduled outside of these windows in order to maintain system performance, reliability, security and stability of the Salesforce infrastructure.
 
This information applies to Force.com, Sales Cloud, Service Cloud, Analytics Cloud and Communities. 

Resolution

While these are our preferred windows to schedule and perform Salesforce maintenance, we infrequently schedule maintenance during the two preferred system maintenance windows each month. We ask that you plan your maintenance activities for your Salesforce org (software upgrades, integration changes, etc) outside of the preferred Salesforce system maintenance windows.
 
We have also rolled out Read-Only capabilities that enable customers to have Read-Only access to their data during longer maintenance windows in order to minimize the impact of maintenance windows. For more information, see the How is my org impacted during Salesforce maintenance? article.
 
When maintenance is scheduled, we publish the dates and times of the maintenance windows on trust.salesforce.com which today shows a forward 12-month view of the maintenance windows Salesforce plans to take. Premier Alerts are sent via email when the maintenance windows are posted to trust.salesforce.com. Approximately one week prior to the scheduled maintenance, we communicate those dates and times via the in-application pop-up window upon login to Salesforce.
 
In the event of planned maintenance that requires customer action in advance (e.g. updating network settings in preparation for additional login pools), Salesforce endeavors to communicate via email** months prior to the maintenance. Please Note: If emergency system maintenance is required, customers may be notified less than one (1) week in advance.
 
There are two types of maintenance at Salesforce: System Maintenance and Release Maintenance.

System Maintenance is for sustaining the security, availability, and performance of the infrastructure supporting Salesforce services. Whenever possible, and as maintenance is necessary, Salesforce will schedule system maintenances during the following windows:
 

Preferred System Maintenance Windows
InstanceDaysPacific TimeUTC During
Standard Time
UTC During
Daylight Savings
Time
NA2, NA7, NA11, NA14, NA15, NA17, NA18, NA22, NA23, NA24, NA25, NA27, NA34, NA35, NA41, NA42, NA43*1st & 3rd Sundays each month12:00am – 4:00am08:00 – 12:00
Sunday
07:00 – 11:00
Sunday
Other NAx1st & 3rd Saturdays each month7:00pm – 11:00pm03:00 – 07:00
Sunday
02:00 – 06:00
Sunday
EU5, EU6, EU11, CS80, CS81, CS82, CS83, CS84, CS85, CS86, CS87, CS88, CS891st & 3rd Saturdays each month2:00pm – 6:00pm22:00 Saturday 02:00 Sunday21:00 Saturday – 01:00 Sunday
Other EUx1st & 3rd Saturdays each month7:00pm – 11:00pm03:00 – 07:00
Sunday
02:00 – 06:00
Sunday
AP0, AP31st & 3rd Saturdays each month8:00am – 12:00pm PST

9:00am – 1:00pm PDT
16:00 – 20:00
Saturday
16:00 – 20:00
Saturday
AP1, AP2, AP4, CS5, CS6, CS311st & 3rd Saturdays each month7:00am – 11:00am PST

8:00am – 12:00pm PDT
15:00 – 19:00
Saturday
15:00 – 19:00
Saturday
Other CSx1st & 3rd Saturdays each month7:00pm – 11:00pm03:00 – 07:00
Sunday
02:00 – 06:00
Sunday

* Instances that are normally scheduled for maintenance between 12am and 4am PT may occasionally have maintenance between 7pm and 11pm PT for infrastructure that is shared with other instances.

 

Release Maintenance is for upgrading Salesforce services to the latest product version to deliver enhanced features and functionality. There are three different kinds of release maintenance: major releases, patch releases, and emergency releases.

 

Major Release Maintenance dates and times are posted on trust.salesforce.com approximately one year before the release date. To see the schedule for your instance click on http://trust.salesforce.com/trust/instances and select the relevant instance. On the calendar click the release date to view further information.

 

An email notification** containing Sandbox preview instructions is sent approximately one month prior to upgrading Sandbox instances.  Email notification** of major release dates is sent one month prior to upgrading production instances. The Release Notes document, describing the new features and functionality, is posted in Help & Training one month prior to upgrading production instances. Final release reminders are communicated to all customers approximately one week prior via email** and application pop-up windows upon logging into Salesforce.

 

Major release maintenance occurs three times per year during the windows listed below. The instance will be unavailable for up to five minutes during the release window.

 

On the day of the major release, customers will be notified via posts on trust.salesforce.com as well as Premier Alert emails at three points during the release process:

 

  1. Five (5) minutes before the scheduled release window begins

  2. Immediately after the release is live on the instance

  3. After all new features are available

 

The third notification will typically occur a few hours after the release, but this time can vary. Salesforce is committed to completing the feature enablement within 24 hours of the major release window.

Release Maintenance Windows
(A Specific Five Minute Window Will be Posted on Trust for Each Instance)
InstanceJanuary
May
September
February
June
October
Pacific TimeUTC During Standard TimeUTC During
Daylight Savings Time
NA44, NA45Friday 8:00pm – 2:00am04:00 – 10:00
Saturday
03:00 – 09:00
Saturday
Other NAx, CS33 Friday8:00pm – 2:00am04:00 – 10:00
Saturday
03:00 – 09:00
Saturday
EUx Friday2:00pm – 8:00pm22:00 Friday – 04:00 Saturday21:00 Friday – 03:00 Saturday
APx, CS6 Saturday8:00am – 1:00pm PST

9:00am 2:00pm PDT
16:00 – 21:00
Saturday
16:00 – 21:00
Saturday
CS5, CS31Saturday 8:00am – 1:00pm PST

9:00am – 2:00pm PDT
16:00 – 21:00
Saturday
16:00 – 21:00
Saturday
CS80, CS81, CS83, CS85, CS87, CS88Friday 2:00pm – 8:00pm22:00 Friday – 04:00 Saturday21:00 Friday – 03:00 Saturday
CS82, CS86, CS89 Friday2:00pm – 8:00pm22:00 Friday – 04:00 Saturday21:00 Friday – 03:00 Saturday
Other CSxFriday 6:00pm – 12:00am02:00 – 08:00
Saturday
01:00 – 07:00
Saturday
 Saturday10:00am – 4:00pm18:00 – 24:00
Saturday
17:00 – 23:00
Saturday

Patch Releases and Daily Releases are used to deliver scheduled and ad hoc application fixes and are typically seamless to customers. Whenever possible, patches and daily releases are deployed during off-peak hours and without downtime. Patch releases are scheduled weekly and are usually deployed to instances on Tuesday, Wednesday or Thursday, with release to Asia-Pacific instances the following day. Daily releases are conducted on an as-needed basis and can occur any day of the week.


**Salesforce Product & Service Notifications are sent via email to system administrators (identified as users with the “Manage Users”, “Modify all Data” permissions) for your organization. For more information, see the Product & Service Notifications article.





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