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Today, the support of SharePoint 2010 versions between RTM(14.0.4762.1000) and SP1 (14.0.6029.1000) is ended as you can double check in the following link:
That is because the SP1 was released one year ago and ,as you may know, the Office Business Group Service Pack policy states "When a new service pack is released, Microsoft will provide 12 months of support for the previous service pack". More info in the following link:
Then, the new support cases opened regarding issues between RTM and SP1 versions will be treated as "limited support". That means that you will face the following limitations:
For more info:
So, please, I would like to recommend you to install at least SharePoint 2010 SP1 + any of the latest cumulative updates to keep your infraestructure fully supported. To install the SP1 you could follow the following link:
Héctor Calvarro Martín. SharePoint Dev/Core. Microsoft Support Escalation Engineer for EMEA
It is available to download the updates regarding SharePoint 2010 June 2012 CU
SharePoint 2010 (Build 14.0.6123.5000)
(REMEMBER TO INSTALL BEFORE THE SP1)
If SPS 2010 installed you must only install the SPS 2010 CU because it includes the Foundation one.
After installing the updated you should run the SharePoint Config Wizard in every server of the farm.
After you install this hotfix, you must restart the User Profile Synchronization Service for profile synchronization to function correctly.
To work around this issue, follow these steps:
1.Visit Central Administration. 2.Click Manage Services on the System Settings section. 3.Find User Profile Synchronization Service in the list of services and then click Stop if its status is Started. Click Start and provide the credentials to start the User Profile Synchronization Service as soon as its status is Stopped.
For more information, see the Start the User Profile Synchronization service section in the Configure profile synchronization article in the library.
Thank you so much.
The SharePoint Server 2013 Preview is available to download from the next page:
On the other hand, it has been also release some content for IT-Pros and developers
I would like also to point you to the next page for more info: