Can't open Company Web after windows update KB28881068

Question

Windows installed a number of updates over the weekend on our SBS 2008 server, one of them being:
Security Update for Windows SharePoint Services 3.0 x64 Edition (KB2881068)
Installation date: ‎3/‎13/‎2015 6:59 PM
Installation status: Successful
Update type: Important
A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the
associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.
The server was rebooted twice and now we have no access to our company web. While the update indicates a successful installation, event viewer indicates otherwise:
Log Name:      Application
Source:        SharePoint Products and Technologies Configuration Wizard
Date:          3/13/2015 6:59:45 PM
Event ID:      104
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      DC1.Codespoti.local
Description:
Failed to upgrade SharePoint Products and Technologies.
Failed to upgrade SharePoint Products and Technologies.  Further information regarding this failure can be found at C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\LOGS\Upgrade.log.
An exception of type Microsoft.SharePoint.PostSetupConfiguration.PostSetupConfigurationTaskException was thrown.  Additional exception information: The upgrade command is invalid or a failure has been encountered.
Failed to upgrade SharePoint Products and Technologies.
Microsoft.SharePoint.PostSetupConfiguration.PostSetupConfigurationTaskException: Exception of type 'Microsoft.SharePoint.PostSetupConfiguration.PostSetupConfigurationTaskException' was thrown.
   at Microsoft.SharePoint.PostSetupConfiguration.UpgradeTask.Run()
   at Microsoft.SharePoint.PostSetupConfiguration.TaskThread.ExecuteTask()
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="SharePoint Products and Technologies Configuration Wizard" />
    <EventID Qualifiers="0">104</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-03-13T22:59:45.000Z" />
    <EventRecordID>6626486</EventRecordID>
    <Channel>Application</Channel>
    <Computer>DC1.Codespoti.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>Failed to upgrade SharePoint Products and Technologies.
Failed to upgrade SharePoint Products and Technologies.  Further information regarding this failure can be found at C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\LOGS\Upgrade.log.
An exception of type Microsoft.SharePoint.PostSetupConfiguration.PostSetupConfigurationTaskException was thrown.  Additional exception information: The upgrade command is invalid or a failure has been encountered.
Failed to upgrade SharePoint Products and Technologies.
Microsoft.SharePoint.PostSetupConfiguration.PostSetupConfigurationTaskException: Exception of type 'Microsoft.SharePoint.PostSetupConfiguration.PostSetupConfigurationTaskException' was thrown.
   at Microsoft.SharePoint.PostSetupConfiguration.UpgradeTask.Run()
   at Microsoft.SharePoint.PostSetupConfiguration.TaskThread.ExecuteTask()</Data>
  </EventData>
</Event>
The log file is about 5Mb in size and was not able to figure out where the problem was.
How do I fix this failed installation or roll the update back ?

Answer 1

Hi RWheway,
From the KB2881068, we can get following description.
Known issues with this security update
After you install this security update, you have to run the PSconfig tool to complete the installation process.
Would you please let me know whether run the PSconfig tool after installing this security update? Just a confirmation, thanks for your understanding.
If this issue still exist, please refer to following article and check if help you to troubleshoot this issue.
Companyweb Inaccessible After Sharepoint 3.0 Service Pack 2
By the way, please also run
SBS BPA tool and check if find relevant issues.
Best regards,
Justin Gu
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