Tag Archives: Hotfix

Ex2013 CU6 & Ex2007 coexistence issue for EAS

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Ex2013 LogoA short notice on an issue when you have deployed Exchange 2013 Cumulative Update 6 in coexistence in an Exchange 2007 environment. Exchange fellow Tony Redmond did a write-up on the issue here.

The issue prevents ActiveSync users whose mailbox reside on Exchange 2007 to authenticate properly when their requests are being proxied from Exchange 2013 CU6 to Exchange 2007. It has been identified in KB2997847. Alternatively, you direct Exchange 2007 EAS traffic directly to Exchange 2007 CAS servers when they are internet-facing and published.

Be advised that a previous known issue in this deployment scenario with delegates and dismounting stores has been identified in KB2997209.

Both articles provide links to request these hotfixes.

Another Exchange fellow, Jason Sherry, is keeping track of resolved and open Exchange 2013 CU6 issues here.

Exchange2013-KB2997355-FixIt-v2

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Ex2013 LogoAs mentioned earlier, when you have deployed Exchange Server 2013 Cumulative Update 6 in a Hybrid deployment, several Office 365-related mailbox functions will not show up in the Exchange Admin Center (EAC). The issue was identified by Microsoft in KB2997355 and a fix was published.

However, the script to fix the issue looks for the XAML file in the default Program Files folder, using the default Exchange installation folder. Better is to check the actual Exchange installation folder, which can easily be accomplished in Exchange Management Shell using the $exinstall environment variable, or by reading the folder from the registry.

To help those installing Exchange in a non-default installation folder, and I know there are quite a few of you out there, who are hesitant to correcting the installation path in the provided FixIt script, I have create an alternative version of the Exchange2013-KB2997355-FixIt script. This version will read the installation path from the registry. Not disturbing but changed as well is correcting the XAML file in one go, unlike the official script which performs 3 consecutive read/modify/write actions on the same file.

You can download the Exchange2013-KB2997355-FixIt-v2.ps1 script here.

 

Exchange 2013 SP1 Transport Agent Fix (updated)

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Ex2013 LogoAfter installing Exchange 2013 Service Pack 1, people reported issues with Transport Agents. Symptoms are that the Transport service doesn’t start or stops shortly after starting the service or you can’t install the 3rd party product.

Products experiencing the issue are TrendMicro ScanMail, McAfee Email Security (GroupShield), Symantec Mail Security for Exchange, AVG for Servers, ESET Mail Security for Exchange and CodeTwo Exchange Rules. Products from other vendors may be affected as well.

Microsoft is aware of this issue and has published KB2938053 which has a small Exchange2013-KB2938053-FixIt.zip script to fix the issue.

The cause of the issue lies in XML files containing invalid XML markup in the form of “comments” which prevents .NET from loading the XML files, e.g.

<!-- 15.0.847.30 -------------------------------->

The two files containing the invalid XML markup are:

$Env:Windir\Microsoft.NET\assembly\GAC_MSIL\policy.8.0.Microsoft.Exchange.Data.Common\v4.0_15.0.847.30__31bf3856ad364e35\Microsoft.Exchange.Data.Common.VersionPolicy.cfg
$Env:Windir\Microsoft.NET\assembly\GAC_MSIL\policy.8.0.Microsoft.Exchange.Data.Transport\v4.0_15.0.847.30__31bf3856ad364e35\Microsoft.Exchange.Data.Transport.VersionPolicy.cfg

Be advised that the script supplied in the KB article tries to locate and fix various alternate versions of those files. Something you might want to consider as well when fixing it manually, should you be unable to locate the specific files mentioned above.

After running the script you should be able to start the Transport service or install 3rd party containing transport agents..

Update (3/5): Updated blog after official KB article got published. The issue was also blogged on by fellows Jason Sherry, Paul Cunningham while Tony Redmond has additionanal background details here.

MS13-105: Security Fix & Rollup Fest for Exchange 2007/2010/2013

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Ex2013 LogoToday the Exchange Team released security fixes for the issue described in bulletin MS13-105. Fixes have been released for the following product levels:

Note that depending on the release scheme fixes are either made available through a Rollup or as security fix; the Rollups only address the vulnerabilities mentioned in security bulletin.

Note that this Rollup or security fix replaces MS13-061 – you can install MS13-105 over installations containing MS13-061 (no need to uninstall it first).

Exchange 2013 and .NET 4.5 fixes KB2803754 & KB2803755

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Ex2013 LogoMicrosoft published an important hotfix for .NET 4.5 earlier this year. It wasn’t picked up on by many, therefor a quick write up on the matter.

Since Exchange 2013 is built on top of .NET 4.5, it is recommended to install the hotfix on all Exchange 2013 Mailbox and Multi-Role servers. The hotfix will reduce the memory consumption of the store worker processes.

If you’re using Windows Server 2008 R2, the hotfix is KB2803754 and can be requested here; when using Windows Server 2012 the hotfix is KB2803755 which can be requested here.

After installing the hotfix, you need to do one of the following things:

  • Set the following registry key:
    HKLM\Software\Microsoft\.NETFramework\DisableRetStructPinning=1 (REG_DWORD)
  • Set the COMPLUS_DisableRetStructPinning environment variable to 1

I’d prefer the first option. Note that you need to restart the server for the change to become effective.

Thanks to Tony Redmond for the heads up.