Category Archives: Small Business Server 2008

The Microsoft Fax Service may crash randomly on Windows Server 2008 – SP2, SBS 2008 – SP2 or Windows Server 2008 R2, SBS 2011

You may find that the Microsoft Windows fax service randomly crashes, this will be evident in the Windows Application Event Log where you will find Events with a Source of “Application Error”. These will reference “fxssvc.exe” and the exception code within the event will most likely be “0xc0000005”.

The error can occur because of a race condition in the fax service, this in turn can cause the access violation knocking the fax service over.
The issue can be resolved by installing the Microsoft Hotfix from KB 2302075 http://support.microsoft.com/kb/2302075 this hotfix contains updated versions of “Fxssvc.exe” for Server 2008/Vista/SBS 2008 – SP2 and Server 2008 R2/Windows 7/SBS 2011

The Microsoft Fax Service crashes when you receive a fax on Windows Server 2008 – SP2, SBS 2008 – SP2 or Windows Server 2008 R2 – SP1, SBS 2011 – SP1

You may find that the Microsoft Windows fax service randomly crashes when your server is receiving a fax, this will be evident in the Windows Application Event Log where you will find Event ID 32083 and 32089.  These Events will contain the following errors/warnings:

The Fax Service failed to execute a specific routing method. The service will retry to route the fax according to the retries configuration. If the retries fail, verify routing method configuration.

and/or

Unable to route fax FileName to the requested e-mail address. The following error occurred: 0x80040211 This error code indicates the cause of the error. Check the SMTP server configuration, and correct any anomalies.

The error is related to two classes not being unregistered each time the Inetcomm.dll module is unloaded, next time it is loaded to route a fax a function still tries to point to the old address and causes the Fax Service to Crash.

The issue can be resolved by installing the Microsoft Hotfix from KB 973640 http://support.microsoft.com/kb/973640 this hotfix contains updated versions of Inetcomm.dll and Inetres.dll for Server 2008/Vista/SBS 2008 and just a new version of Inetcomm.dll for Server 2008 R2/Windows 7/SBS 2011

Watchguard – SSL VPN clients cannot resolve internal host names despite DNS servers being configured for the connection

You may find that when you configure your Watchguard XTM Firewall to accept SSL VPN connections that clients can connect to

the VPN and ping IP addresses of internal resources, however you cannot resolve internal hosts even via FQDN using DNS.  You

may also find that when you run NSLOOKUP on the SSL VPN connected client that the  result is your Internet Service Providers

DNS servers rather than the DNS servers assigned via the VPN connection.

 

To resolve the issue you can change your SSL VPN configuration from a “Routed VPN” to a “Bridge VPN”, the routed VPN uses a

virtual IP address pool (192.168.113.0/24) which does not match your internal IP range or the address range of the internal

DNS Servers.  When a Windows client connects to the “Routed VPN” it appears that due to the DNS server mismatch they are not

utilised by the client.

 

When you configure the VPN in “Bridge VPN” mode you can work around this issue, the Bridge VPN configuration allows you to

exclude some addresses from your Windows DHCP Server Pool and add the into them “Start” and “End” IP addresses on your

Watchguard SSL VPN Configuration Page. The Watchguard will now become responsible for assigning these internal IPs to VPN

clients as they connect rather than the Windows DHCP Server.

 

You should now find that when your SSL VPN clients connect that they are assigned an IP address and DNS server that are all

within the existing internal IP range of your network.  An NSLOOKUP should now return your internal DNS server address and

you should be able to ping hostnames and FQDNs that reside within your internal network.

 

Examples:

ping windowsserver

ping windowsserver.exampledomain.local

 

Please remember that the only down side with this configuration is that a “Bridge VPN” bridges to the “Trusted” interface,

this means that the client computer can access any internal resources that they have permissions for by default. A “Routed

VPN” allows you to offer traffic to Optional/secondary networks and gives you more control by letting you lock down access

using “Specify allowed resources”.

Microsoft Windows Vista – SP1 or SP2 and Microsoft Windows Server 2008 – SP1 or SP2 – How to Easily Free Up Some Disk Space

Have you started to notice that C drive is getting a little full or do you just want to have a spring clean, well you may not realise it but when you installed Service Pack 1 or Service Pack 2 onto your Windows Vista or Windows 2008 Server that Microsoft very sensibly backed up all the old system file before replacing them with new ones.

Assuming that you have had Service Pack 1 or Service Pack 2 installed for sometime without issue it may be good to know that you might be able to reclaim some disk space by dumping these obsolete system files.

Simply launch an elevated Command Prompt by right clicking “Command Prompt” and selecting “Run as administrator”.  Once you are in a command prompt simply paste in the following according to the Service Pack you are currently running:

Service Pack 1 you need to paste: VSP1CLN.EXE

Service Pack 2 you need to paste: Compcln.exe

Be patient with these commands they will need time to enumerate a large number of files and could take up to 60 minutes to complete.  Once finished I would recommend a reboot.

With these commands we are telling the operating system to remove any of the superseded service pack files.  If you do not have any files to remove it might be because someone else has already removed them or your computer/server may have already come with Service Pack 1 or Service Pack 2 pre-installed/integrated.