After October 26, 2014, Exchange Server some users who are in Russian time zones may see meeting times incorrect Time Zone-display names may be outdated in OWA.

Microsoft released an update (KB 2998527) for Windows on September 23, 2014 to address this change and it should be installed on the end user PC’s and Servers since exchange and outlook relies on windows for the time zone information.

How to obtain this update

The following files are available for download from the Microsoft Download Center.

Update for Windows Server 2012 R2 (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=1bf7a4a0-3bc1-41cc-a374-b4ce39468c32

Update for Windows Server 2012 (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=4f9e0be3-8b1e-4a55-a901-397a4b63953b

Update for Windows 8.1 for x64-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=ab371992-26ff-41dc-9c4f-d5ada0f40f5c

Update for Windows 8.1 for x32-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=349e7859-5815-45f3-8f4a-8054a3db804d

Update for Windows 8 for x64-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=3691d9fd-6a0a-47cd-b809-82ad81a71082

Update for Windows 8 for x32-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=2f8d1b1f-ec76-4a3c-9d48-a85bfc0394b4

Update for Windows Server 2008 R2 for x64-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=388ab764-8dd4-4ec9-ab03-d7005c553d9c

Update for Windows Server 2008 R2 for Itanium-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=de6ccda2-8ddc-4368-bf20-57e54d3b1d18

Update for Windows 7 for x64-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=c3aaf9fd-9bcb-45d6-9573-370a750ed200

Update for Windows 7 for x32-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=1f09acc5-8791-4d63-ae59-8a9b8d4f0ef3

Update for Windows Embedded Standard 7 for x64-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=3f1ec6b5-8d72-45e9-9c14-26afeb8a92fb

Update for Windows Embedded Standard 7 for x32-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=afe9f877-1554-465c-a89b-0be103ab5468

Update for Windows Server 2008 for x64-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=04ff80b6-4581-4f2c-8133-f344d26d5d35

Update for Windows Server 2008 for x32-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=dede4525-57c1-4cb2-b454-0b617f35e357

Update for Windows Server 2008 for Itanium-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=27a6e895-869b-4011-ae11-ada1c25e26e2

Update for Windows Vista for x64-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=ef48921e-d478-46d3-9b6f-8620a53fa4e8

Update for Windows Vista for x32-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=1707623b-ae1c-4250-ad55-011ec063c279

Update for Windows Server 2003 for x64-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=8573abcf-47a0-4a24-88fc-d8adde177781

Update for Windows Server 2003 for x32-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=1f44929a-fc1b-4b41-b179-c48e4a2b1975

Update for Windows Server 2003 for Itanium-based systems (KB2998527)
http://www.microsoft.com/downloads/details.aspx?FamilyId=de452734-bb99-4d05-873e-0f12988f61d6

Things that we can troubleshoot for the affected reported user even if any issues reported from end users after the above update is applied

1) Restart the affected user’s PC and see the results.

2) login to owa for the affected user and see the time zone whether it is set to UTC+4 as below

3) If it is set to different time zone then correct the value to UTC + 4 as above

Check the affected user date and time settings in his PC and it should reflect as UTC + 3 as below which is Russian Time Zone

4) Also run the below command to check to ensure that the affected user Time Zone is in Russian Standard Time

Get-MailboxRegionalConfiguration “affecteduserid”

5) If you notice the user TimeZone is set to a different region then run the below command to change the user to Russian Standard Time

Set-MailboxRegionalConfiguration “affecteduserid” -TimeZone “russian standard time”

References – https://support.microsoft.com/kb/2998527?wa=wsignin1.0

Thanks 

Sathish Veerapandian