Category Archives: Windows

Office Communications Server 2007 R2: Installation failed with: Failure [0xC3EC78D8] Failed to read the Office Communications Server version information. This can happen if the computer clock is not set to correct date and time.

Its was solved by uninstall KB974571.

Microsoft recommends to postpone installing KB974571 on any LCS 2005 / OCS 2007 /OCS 2007 R2 servers.

Microsoft is investigating this issue, and will determine the most appropriate way to address it. Customers who are not running OCS or LCS server are not affected by this known issue, and can safely ignore this issue.

Customers who have deployed the OCS or LCS product on a server should assess the risk that is involved to decide whether to install the security update on that server. These customers should revisit this Knowledge Base article often, because this article will be updated as soon as more information and a resolution are available.

Office Communications Server 2007 R2: Installation failed with: Failure [0x80070005] Access is denied.

If you installation failed with: Failure [0x80070005] Access is denied.

This is a problems with administrator rights.

Please check the following things:

  1. The user need to be a domain user.
  2. The user is member of: Domain Admins group and RTCUniversalServerAdmins group. (Remember to relogon after you have put the user in these group).

Then right click on the installation file:

\Setup\amd64\setupee.exe (For enterprise)
\Setup\amd64\setupse.exe (For standard)

And then click Run As, then run it without “Run this program with restricted access”

Now you should be able to installed the Office Communications Server 2007 R2

OWA is not working with “owaauth.dll failed to load”

The first error had an Error ID of 2214 and a description of:

“Could not load all ISAPI filters for site ‘DEFAULT WEB SITE’.  Therefore site startup aborted.”

The second error had an Error ID of 2268 and a description of:

“The HTTP Filter DLL C:\Program Files\Microsoft\Exchange Server\ClientAccess\owa\auth\owaauth.dll failed to load.  The data is the error.”

I have resolv this error by copying the C:\Program Files\Microsoft\Exchange Server\Bin\extrace.dll to c:\windows\system32\

Why Exchange OWA can’t find the file in orginal place i can’t answher? But now OWA is working again

Securing a Exchange 2007 Client Access server, with a signed certificates

Securing a Exchange 2007 Client Access server, with a signed certificates

First to request a certificates start Exchange Management Shell

Type this into the console:

New-ExchangeCertificate -DomainName exchange01.domainname.local, webmail.domain.prefix -FriendlyName ”Microsoft Exchange” -GenerateRequest:$True -Keysize 2048 -path c:\certrequest.txt -privatekeyExportable:$true -subjectName “c=DK, o=organization name, CN=webmail.domain.prefix”

Change domainname.local, domain.prefix (2 places) and last change you organization name.

Now you get a file, name c:\certrequest.txt. The content of this file, you can send this to yours 3rd party certificate authority.
After this you got an a signed certificates back, as you need to import into the Exchange servers, this is done like this.

Copy the sign certificates to a file in the root of c:\ name signcert.txt
And run this in the Exchange console

Import-ExchangeCertificate –Path c:\signcert.txt | Enable-ExchangeCertificate –Services IIS,POP,IMAP,SMTP

Exchange 2003 and powershell

Have you ever need a list of yours mailbox and the size of it. You can find this in system manager, but you cannot export this list.
With Powershell you can get a list that you example can import in excel.
First you need to download and install powershell, you can download powershell from here:
http://www.microsoft.com/windowsserver2003/technologies/management/powershell/default.mspx

After you have downloaded and install it, type this command in the powershell

get-wmiobject -class Exchange_Mailbox -Namespace ROOT\MicrosoftExchangev2 -ComputerName servername | select-object MailboxDisplayName,TotalItems,Size

Change “servername” to you servers name example exchange01

Exchange 2003 and 75GB datastore

With exchange 2003 SP2, the database store in Exchange is increase to 75GB, this is not setup automatic.
You have to change something in the registry database.

To set the size of the private mail store

  1. Click Start, click Run, type regedit, and then click OK. Regedit starts.
  2. Browse to HKEY_LOCAL_MACHINE/ System/ CurrentControlSet/ Services/ MSExchangeIS/ ServerName, where ServerName is the name of your server that is running Windows SBS.
  3. To modify the private mail store size, right-click the Private-GUID folder, click New, and then click DWORD Value.
  4. Type Database Size Limit in GB, and then press ENTER.
  5. Right-click the new entry and then click Modify.
  6. In the Base field, click Decimal. In the Value data text box, type a number between 1 and 75. This is the new maximum size of your database in gigabytes.
  7. Click OK.
  8. Close Regedit.

Next you maybe want to get a warning when the database is almost at the limit, this can be setup this way:
To set the size of the buffer

  1. Click Start, click Run, type regedit, and then click OK. Regedit starts.
  2. Browse to HKEY_LOCAL_MACHINE/ System/ CurrentControlSet/ Services/ MSExchangeIS/ ServerName, where ServerName is the name of your server that is running Windows SBS.
  3. To set a buffer size for the private mail store, right-click the Private-GUID folder, click New, and then click DWORD Value.
  4. Type Database Size Buffer in Percentage, and press ENTER.
  5. Right-click the new value and then click Modify.
  6. In the Base field, click Decimal. In the Value data text box, type a number between 1 and 100. A value of 10, for example, results in warning events being logged when the database has 10 percent capacity remaining.
  7. Click OK.
  8. Close Regedit.

Arcserve R12 missing Exchange document level

After you have installed Arcserve R12, you maybe missing Exchange document level on you Exchange 2007. This may caused by you don’t have install ”Microsoft Messaging API and Collaboration Data Objects 1.2.1”, this can be downloaded here:

http://www.microsoft.com/downloads/details.aspx?FamilyID=E17E7F31-079A-43A9-BFF2-0A110307611E&displaylang=en

After you have install this, you only need to restart the two CA services on the Exchange server:
CA ARCserve Discovery Service
CA ARCserve Universal Agent