Microsoft Exchange 2010 SP2 Rollup 4

On August 13th 2012, the Microsoft Exchange team released Rollup 4 for Exchange Server 2010 SP2.
This update Rollup 4 can be downloaded from Microsoft Download Center:

Update Rollup 4 for Exchange Server 2010 Service Pack 2 (KB2706690)

This update contains a number of customer reported and internally found issues.

Detailed description of Update Rollup 4 for Exchange Server 2010 Service Pack 2 can be found here:

Description Update Rollup 4 for Exchange Server 2010 Service Pack 2 KB 2706690

Remember, you only need to download the latest update for the version of Exchange that you’re running.

Microsoft Exchange 2010 how to reduce the size of the database

As is known in the Microsoft Exchange database size after removal of the mailboxes is not decreasing but remains the same.
Created the database “gap” so called White Space which tells us about the amount of available space, which can be used without the need to increase the size of the database file .edb.
Only after completing the White Space, a further increase in the size of mailboxes in the database, it will increase the file size .edb file.

In the case of Microsoft Exchange databases such solution is problematic, because in order to reduce file size .edb after removing mailboxes from the database we use the most with ESEUTIL, which have performed defrag the database.

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Exchange 2010 SP2 RU1 RU2 RU3 and CAS to CAS Proxy Incompatibility

Exchange 2010 OWA

Exchange 2010 SP2 CAS Proxying

If any of you considering installing Exchnage 2010 SP2 with RU1 or RU2 or Ru3, the following information is addressed to you.


If your Exchange Organization have many Exchange Servers with CAS roles with different Exchange version, then after upgrade any of CAS server to Exchange 2010 SP2 with RU1 or RU2 or RU3 you can have problems with CAS to CAS proxying.

In scenario where an Exchange 2010 SP2 RU1 Client Access server is proxying to an earlier version of Exchange 2010 or Exchange 2007 Client Access server, then you are affected with a problem to use OWA.

In Event Log you can find errors like:

Event ID: 4999
Log Name: Application
Source: MSExchange Common
Task Category: General
Level: Error
Description: Watson report about to be sent for process id: 744, with parameters: E12, c-RTL-AMD64, 14.02.0283.003, OWA, M.E.Clients.Owa, M.E.C.O.C.ProxyUtilities.UpdateProxyUserContextIdFromResponse, M.E.C.O.Core.OwaAsyncOperationException, 413, 14.02.0283.003.

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How to remove (purge) Disconnected Mailboxes

If in the Microsoft Exchange Server 2010 we delete mailbox users by selecting the Remove or Disable, mailboxes and their contents are still stored in the Exchange database.

The difference between the operation Remove and Disable:

  • Disable – disconnects the mailbox from email were the user account in Active Directory, leaving the user account enabled, as indicated in the Disconnected mailboxes list, disappears from the address book and it can be reconnected by going in for EMC: Exchange Organization -> Recipient Configuration -> Disconnect Mailboxes
  • Remove – removes the user account in Active Directory with mailbox

If you want to see a list of disconnected mailboxes in specified Exchange databasethen use the command:

Get-MailboxStatistics -Database "MailboxDatabase" | Where { $_.DisconnectDate -ne $null } | select DisplayName, DisconnectDate,TotalItemSize, TotalDeletedItemSize

to show all disconnected mailboxes in specified mailbox server:

Get-MailboxStatistics -Server MBXServer | where { $_.DisconnectDate -ne $null } | select DisplayName,DisconnectDate | sort DisconnectDate

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Outlook size limit for .pst .ost files

If you use Outlook with internet mailbox or with Exchange cached mode, outlook will use .pst or .ost file to store data.

Each of this files has his own maximum data limit supported by Outlook.
If this limit is reached .pst or .ost files are permitted to add any more data.

If outlook pst, ost file reach the size limit then you will get the warning.

Below, in table you can check maximum size limit, depended on Outlook version.


Outlook 2010

Name Type Valid Data Range Default
MaxLargeFileSize REG_DWORD 0x00000001 – 0x0000C800 0x0000C800 51,200 (50 GB)
WarnLargeFileSize REG_DWORD 0x00000000 – 0x0000BE00 0x0000BE00 48,640 (47.5 GB)
MaxFileSize REG_DWORD 0x001F4400 – 0x7C004400 0x7BB04400 2,075,149,312 (1.933 GB)
WarnFileSize REG_DWORD 0x00042400 – 0x7C004400 0x74404400 1,950,368,768 (1.816 GB)

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Microsoft Exchange Server 2013 Preview Help files offline

If you are looking for Exchange Server 2013 offline help files, you can download them from Microsoft Download Center.

On this website Microsoft Exchange Server 2013 Preview Help files offline you can download 3 versions of files:

Each Help file related to Microsoft Exchange 2013 Preview is in a compiled HTML help format (.chm).

Free ebooks from Microsoft

Recently, the Internet was made available a large collection of free ebook discussing topics s SharePoint, Visual Studio, Windows Phone, Windows 8, Office 365, Office 2010 and others.

If you only have time you might want to have a look, everyone should find something for everyone.

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Windows 8 and Windows Server 2012 RTM

Microsoft announced Windows 8 and Windows Server 2012 have already obtained the status of the product RTM (Ready to Manufacturing).

Windows Server 2012 RTM this week will be delivered to vendors hardware and software developers. Then a few weeks will be available to customers of their acquired licenses SA.

On 09/04/2012 Windows 2012 RTM will be available to all customers.

Similarly, the system has been certified Windows 8 RTM build number 9200.16384.win8_RTM.120725-1247

08/15/2012 System will be available to developers through MSDN subscriptions

08/15/2012 the system will be available for IT professionals to test environments through TechNet subscriptions

8/16/2012 customers with Microsoft Software Assurance for Windows will be able to download the new system through Volume License Service Center

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Yesterday 31/07/2012, Microsoft launched a new service called Mail
The name comes of course from the popular email client available in the office productivity suite Microsoft Office, so that everyone will be able to immediately associate the domain with Microsoft.

In the beginning was to refresh the services billed but Microsoft decided to launch a new project which will keep existing services offered by Hotmail, adding a modern look and a few features.

Anyone who so far had an account at can decide whether to remain with his current address whether you want to change it to new one

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