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Posts Tagged ‘Windows’

Google Apps Outlook Sync – XP 64 bit

August 13th, 2010 4 comments

Trying to install the Google Apps Outlook Sync connector on your XP 64 bit PC?  Getting the following error: “Could not find http.sys.  Please install all patches specified in the system requirements.  For more details, see: http://support.microsoft.com/kb/939786”

Don’t worry, it can be done!

Copy the http.sys file from “C:\WINDOWS\System32\Drivers\” to “C:\WINDOWS\SysWOW64\Drivers\”

Install the connector.

Sorted!

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Windows Vista/7: Blank screen after logon

January 26th, 2010 No comments

Recently had this problem at work after I had modified the log on script to add a new printer. You may have noticed in Windows Vista & 7 when you add a network printer a message box pops up asking you to confirm to install the printer driver.

Well our log on script is set to run and complete before the desktop loads, so because the desktop hasn’t loaded yet you never see the pop up message asking you to confirm to install the printer driver. So the PC just sits there with a blank screen waiting for you to click yes or no on a pop up box that you can’t see!

The solution? Log onto the PC using a local account or a network account that doesn’t have a log on script (maybe the network administrator), add all the network printers you need. Log back off and log on as normal. Solved!

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Windows Server 2003: Windows update registry settings

December 14th, 2009 No comments

Want to change the Windows Update settings on your Windows Server 2003 but the options are greyed out? You can change them in the registry.

Go to Start> Run> regedit

Go to HKLM> Software> Policies> Microsoft> Windows> WindowsUpdate> AU

To turn off Windows Updates completely, change NoAutoUpdate to 1.

To select one of the other 3 options change AUOptions to either 2, 3 or 4 (Notify=2, Download=3, Automatic=4).

Close and you’re done!

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Windows domain force user log off

October 20th, 2009 No comments

An easy way to do this is to set a log on  hours restriction in Active Directory then set the default domain security policy to force log off when user log on hour expires.

You can find the policy setting in Administrative Tools> Domain Security Policy> Local Policies> Security Options> Network security: Force logoff when logon hours expire

Alternatively you can set it from GPO: \Computer Configuration\ Windows Settings\ Security Settings\ Local
Policies\ Security Options\ Network Security: Force logoff when logon hours
expire

I’m not sure which takes preference though so you’ll just have to try it and find out.

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Windows Exchange: Spam & SPF records

October 5th, 2009 No comments

Just thought I’d do a quick post on one of two things I’ve just been looking at for Windows Exchange 2003; SPF records.

Sender Policy Framework (SPF) is basically an email validation system used to prevent spam. If you own a domain, you create an SPF record in your DNS records detailing which machines are allowed to send mail as your domain (i.e. your exchange server and possibly your ISP too). Then, when an email server receives an email, it can check on the DNS records of the domain and see if the computer who sent the email is really allowed to send email as that domain. If it’s not, the the email will be marked as spam. It will help cut down the amount of spam you get that’s addresses from yourself!

If you need help creating an SPF record, check out this excellent SPF wizard.

I’ve also just been looking at Windows Exchange Server 2003 possibly being an open relay. Will do a post on that soon.

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Windows VPN Ports – PPTP and GRE

September 28th, 2009 1 comment

So I’ve set up a VPN server at work. Great for connecting from home to access the network. I’m using just the built in VPN server in Windows Server 2003 and creating a VPN connection from Windows Network and Sharing Centre. It’s a piece of cake to set up.

The only extra thing you need to do is open the ports in the firewall to allow the connection. Windows VPN by default uses PPTP, which uses port 1723. We have a Juniper firewall which comes set up with lots of predefined services so you can quickly and easily open all the right ports for the application you are using. Great. So I allowed the PPTP service for the mapped IP address the server uses. Done. Or so I thought.

It just wouldn’t connect. I turned off the firewall, tried it again, and it worked straight away. So why wasn’t it working?! After a quick search on the internet I read that you also need to pass GRE. Quick check on the Juniper, GRE was listed on predefined services, added that to the policy for the VPN server. Bingo, it works!

Not sure if that applies to other firewalls. I’ve set this up before and never encountered this problem. Maybe it’s just on the Junipers?

If your firewall doesn’t have predefined services, for GRE you need to open protocol 47 on any port, or ports 0-65535 (all ports).

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Windows 32bit 4GB RAM Shared Graphics

September 24th, 2009 No comments

I know that 32bit x86 versions of Windows can’t use more than about 3GB of RAM, but I’ve often wondered, if you install more than the OS can use, can the rest be used by the shared graphics that is common on most laptops and a lot desktops these days? Well I just came across the answer. No. Bummer.

However, I also found out that if your 32bit CPU has PAE, you could possibly have up to 64GB RAM. Sweet 🙂

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