Ryan -

What is the make and model # of your Modem and Router?
- Could have another router in the setup?

Do you have any other equipment in the mix; wireless bridge, SlingLink, switch, etc.

Let me know 

I am having the exact same problem.  i have tried everything i could think of with no luck.  The box works perfectly unless i try to access through my wireless network. Even works through a remote connection as long as it is LAN.  I am running a LinkSYS WRT54GL.  Does anyone have any suggestions?????

carpathia16 said: Add me to the list of people having this problem repeatedly.  It requires a re-set either of the cable box or the Slingbox.  The kind folks who are hosting my Slingbox reset it, but they're not always available and their patience might wear thin.  A permanent fix would be much appreciated.

Hi, I'm getting the same problem here.  The Slingbox is in the UK and I'm in Copenhagen with no remote viewing on a Laptop running Vista Home premium.  My Windows firewall is turned off and McAfee firewall set to allow the Slingbox to communicate both ways.   Setting up at home was 100% successful according to the process.

 Remote viewing worked fine on my parents' PC back in the UK.  It was running XP and NTL netguard security software.  Didn't have to change any settings.

 Anybody got any ideas?   Is it Vista Home Premium?  Should I alter my setup that I don't know about? I'm away from home four nights a week and the Slingbox isn't doing what I bought it for.

Many Thanks

trying to set up new slingplayer after installation of Vista home premier.  Doesn't work.  Error code about firewall/nat.  Worked with XP fine.  Any suggestions?  I am running System Mechanic 7 Pro as my firewall.  I have disabled windows firewall.  Help? anyone?

I too am getting the same error code, but ONLY when I am trying to view remotely using my AT&T broadband card.  The Slingbox Tech said AT&T is blocking the port I am using (5001).  Of course AT&T says they only provide air time and to contact Sierra Wireless who manufactures the card.  Sierra Wireless says they only manufacture the card and to call AT&T.  What port is everyone else using?  Apparently, I need to use something different than 5001.  Thanks.

    hi ,, i to have the same problem it drops the conection when i am away from home works great at home but you go away and bang nothing  i love my tv and am going to poland soon if any one in england knows about all this would be grateful for help  they may give me   maria

Mine has also suddenly started giving this error as well.   Like many people I had experienced the Error code 0x8007274C, so have my modem/router/slingbox on a timer so that it reboots every night.  Using that I have had no problem for months.   Now suddenly I am getting this error, even though the system is being rebooted.

What is the difference between 'Error code 0x8007274D' and 'Error code 0x8007274C' anyway ?  Anyone know ?

Hi Guys,
I have tryied to conect from Romania to Australia and had the same issues,
My solution is change the Ip from Sling box and the port NOT 5001 chose a diferent one could be 3030 or whatever and IT dose work, I can conect to it!!!
I m sooo happy