I get the same error.  Actually, if I reset the slingbox it works for the first connection, but then the next time I restart my computer I get the error again.

I had this problem.  Resetting the Slingbox had no effect.  Resetting the Linksys router fixed the problem.  I now make it a habit to reboot the router every weekend when I'm at home which seems to be working for me. YMMV

"The significant problems we face cannot be solved with the same level of thinking that created them." -- Albert Einstein

I also have intermittant connection problems, but having had my SB since Dec 2005 without a problem, all of my connection issues began the day I made the latest slingplayer and firmware upgrade... otherwise, nothing has changed for 15 months.  I live in Sweden and my dad's got the box in Georgia so resetting the router while I'm watching depends entirely on whether my dad's sleeping or at home.

It's become a little like russian roulette to see if I get that "1 pending" message when I start up the player or if I get stuck with the 0x80072751 message.  I can usually connect within the hour or half hour if I have time to wait, but my morning sportscenter has been cancelled more often than not for the last couple months.

I have spent some hours on the phone with SlingMedia customer service and they really had no solution for me despite checking the router (a D-Link DI-604, which worked perfectly for a year).

I have seen all the tricks... telnet (hasn't worked), resetting SB (works occasionally which tells me firmware screwed something up (again, depends on Dad)), resetting router (doesn't work)... sometimes I wonder if it's my dad's internet provider's upstream (unfortunately 384kbs, but tends to fluctuate some times).  Please help.

Sean

I get this error even inside my house - has anybody got to the bottom of this? It's driving me CRAZY.

Yesterday, everything was great. Today, I get this error message. NOTHING has changed in my network.

I have a Slingbox Pro connected via a Linksys wireless bridge into a Linksys WAP. The network is 100% good, I have verified it - everything can see everything else. I have tried rebooting everything - SB, bridge, WAP, router, PC - no change.

SlingMedia - step up and address this please. You have an awesome product when it works but it is SO FRAGILE. I have a masters in computer science and 20 years experience in the computer business and I can't work this out - what chance does the "ordinary Joe" have?

If you ever really want to be a force in home entertainment, you have to fix this crap.

Thank you.

SlingBox Pro with DirecTV HR20, SlingPlayer for Mac and Windows, AppleTV, Roku NetFlix, iPhone etc etc

Steve Mallard said: *** The Solution *** Not pretty - attach the SB directly to your router, hit the reset button, then fire up SlingPlayer. That will bring up the setup wizard and you have the pleasure of setting up your SB all over again (you do remember which of the 900 Tivo options was the correct one, don't you??) No one at Sling tech support could tell me why the SB just disappears off the network occasionally, but it does...

 Well, it seems to me, that they ought to get off their behinds and fix this problem.  They advertise the product as being able to be accessed from anywhere.  It appears that this is not true in all cases.

I live in Hong Kong. The first month or so after I returned last summer to Hong Kong from the USA everything worked fine. Then I started gettting this error message 0x8007275 and unable to connect for a couple of months. My sister called from her home (where the slingbox hardware is installed) and told me yesterday (Jan. 5th) that she was able to access it after just putting the software on her PC for the first time. I tried again and was successful. However, after trying to update the software & reconnecting later on received the error code message all over again.

The customer support line rep told me that the error code indicated that I needed a "socket update". Well, I have another friend from New York who gave me his finder ID and password and it's working fine again for me.

I want to be able to access the slingbox hooked up to my sister's TV in New Jersey (Direct TV). What do I do next as the customer technical support of slingbox is all but useless.

 Thanks,

 Nick

I had the same exact error msg as all of you and have watched the techs solve this issue first hand through remote control of my computer. Once inside your own network you need to go into Computer management. If you don't know how to do this you shouldn't be in these settings in the first place. Once you're there under Services and Applications you expand the Services menu to find all the services running on your computer. Here you will find the list of all your offending firewall services.
After shutting all of them down (or so I thought) I was still getting the offending error msg. The one I overlooked was the Symantec Core LC. Once this service was stopped I could regain control of the Sling.

The above did not solve my bigger issue that all of us shared which is the sudden and unexplainable loss of remote connection which has happened to me quite a few times and is almost always associated with powering down my router.

It's been 18 months since I contributed to this thread...I'm long overdue giving you an update.

I never got to the bottom of the 0x80072751 problem in my own network but a few weeks after posting my rant above, I took the SB off my wireless network and hardwired it into my ethernet switch.

The problem went away *instantly* and I have had absolutely zero problems of any kind ever since.

SlingBox Pro with DirecTV HR20, SlingPlayer for Mac and Windows, AppleTV, Roku NetFlix, iPhone etc etc