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Best practice to upgrade SEP 11.x clients to SEP 12.x

Created: 29 Apr 2013 • Updated: 17 May 2013 | 8 comments
haroldvm89's picture
This issue has been solved. See solution.

Hello everyone,

Scenario: SEPM 11.x just migrated to SEPM 12.1.2015.2015

I have a group of SEP clients running SEP 11. I sync those SEP 11 clients with SEPM 12

Now, I'm looking for a best way (or best practice) to upgrade those SEP 11 clients to SEP 12 clients

I would like to know if:

1. Upgrade SEP 11 clients to SEP 12 means "installing whole client package again"???

2. Upgrade SEP 11 clients to SEP 12 requires "reboot"?? (Probably it will, just wanna be sure!!)

3. Any situation or problem i could face during this migration???

Thanks in advance :)

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Brɨan's picture

You can check the guides at this link

Best practices for upgrading to Symantec Endpoint Protection 12.1.2

Article:TECH163700  |  Created: 2011-06-30  |  Updated: 2013-01-02  |  Article URL

How to upgrade Symantec Endpoint Protection clients by using Auto-Upgrade

Article:TECH96789  |  Created: 2009-01-14  |  Updated: 2012-06-04  |  Article URL

1. Yes, you will need to migrate over 11.x with the 12.1 client. You can install the same features as what you had in 11.x

2. Yes, upgrading from 11.x to 12.1 does require a reboot.

3. If you follow the above KB article, you should be fine.

Please click the "Mark as solution" link at bottom left on the post that best answers your question. This will benefit admins looking for a solution to the same problem.

technical_specialist's picture

Find the attach link

For Server

Check this Article:

Upgrading Symantec Endpoint Protection Manager from SEP 11 RU7 MP2 to SEP 12.1 RU1 or SEP 12.1 RU1 MP1

Best practices for upgrading to Symantec Endpoint Protection 12.1.2"

For Client

VIDEO: Upgrade clients to SEP 12.1 using Auto upgrade feature

Upgrading clients by using AutoUpgrade

Article:HOWTO17911  |  Created: 2009-01-02  |  Updated: 2009-01-17  |  Article URL

1. Yes, you can upgrade the clients easily using auto upgrade.

2. Yes, Reeboot is required while upgrade the clients.

3. Most probably there is no issue occur because above link is most help full in upgradation.

Disaster Recovery - If in case any problem occur.

Symantec Endpoint Protection 11.x: Best Practices for Disaster Recovery with the Symantec Endpoint Protection Manager

Article:TECH102333  |  Created: 2007-01-21  |  Updated: 2011-11-09  |  Article URL
James007's picture


When you upgrade SEP 11 to SEP 12.2 you need to reboot your sep client.

You must test the AutoUpgrade process before you attempt to upgrade a large number of clients in your production network. If you do not have a test network, you can create a test group. You can add a few non-critical clients to the test group and upgrade them by using AutoUpgrade. You can confirm the upgrade completed successfully by verifying the version number of the client software that appears in the About dialog box.

It's always recommended to have Symantec Endpoint Protection Manager and SEP clients on the same version. 

Public Kb:

Upgrading clients by using AutoUpgrade

Check this one of artical

Ambesh_444's picture


Please check with below article,

SEP 11.x to SEP 12.1 Upgrade process graphical overview

Upgrading Symantec Endpoint Protection Manager from SEP 11 RU7 MP2 to SEP 12.1 RU1 or SEP 12.1 RU1 MP1

Check this Thread:

Thank& Regards,


"Your satisfaction is very important to us. If you find above information helpful or it has resolved your issue. Please don't forget to mark the thread as solved."

technical_specialist's picture


Your answer is different from question which you have raised.

haroldvm89's picture

Yes, Sorry!!! I confused with another post!!

Now, i chose the right solution!! :)