Welcome to MSDN Blogs Sign in | Join | Help

MelSam's Blog

Mel Sampat on Windows Mobile
WMDC/ActiveSync Pass Through Feature

I got an email from a customer asking about device connectivity using the pass through feature in ActiveSync or Windows Mobile Device Center (WMDC). In this settings dialog, what's the difference between Automatic, Work Network and The Internet? Specifically, when should I change the setting to something other than Automatic?

Here's a quick summary of what these settings mean:

Automatic: Detect if a proxy should be used when passing connections through the desktop, and if so detect the proxy on the desktop and configure it on the device. Best if connecting your device to a laptop that may be used at home (with no proxy), as well as a corporate network.

Work: Assume a proxy should be used when passing connections through the desktop, and use whatever proxy is already configured on the device. Best if connecting your device to a desktop computer that is always on your corporate network.

The Internet: Assume no proxy is necessary when passing connections through the desktop. Best for home PCs that are connected directly to the Internet through ISPs like Comcast.

Posted: Monday, November 20, 2006 11:24 AM by MelSam

Comments

Samuel said:

Mel,

I have a problem whereby i have to set to my work network in the device for desktop passthru sync as well as cert enrollment. May i know why this is needed ?

Because in the device, the first entries, "program that automatically connect to the internet should connect using" normally is set to "my isp" to use GPRS for direct push and "programs that automatically connect to a private network should connect using" is set to "my work network" to use private network for sync and cert enrollment.

But i dont understand why we need to set both to my work network in order to allow desktop passthrough sync and cert enrollment to be taken place.

Please advice.

# February 27, 2007 2:32 AM

jburnette said:

I am running Windows Mobile 5 on an HTC 8525.  I have ActiveSync 4.5 installed.  For the first three weeks I was able to sync to my device and also surf the net from my device using the desktop pass-through feature.  My friend took the device away on a trip for a day and when he brought it back I noticed that the pass-through feature no longer works.  I don't know if he tried to connect to another network and the settings got hosed or if ATT pushed some patch to the phone.  Either way, I can still sync and browse files, I just can't get on to the internet.  Furthermore, checking the 'allow wireless connections' box in AS->File->Connections Settings seems to do nothing since my wlan is immediately disabled every time I plug the device in to the usb cable.  I have tried the following to no avail:

1. Used a different HTC 8525 with the same result

2. Installed ActiveSync on a different machine, no luck

3. Tried the registry edit [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows CE Services] "AllowLSP"=dword:00000000

4. Tried using ActiveSync 4.1

5. Played around with the connection settings and network adapter settings on the phone to the point that I have no idea what they were anymore

6. Reset the phone to its defaults, no dice

To test the connection I open IE and try to browse to www.msn.com.  The status in the bottom left of the IE window says "connecting..." then "locating..." then I wait for a while and I get a pop-up that says "The page cannot be displayed because the connection was lost.  Please try again"

My AS connection settings have usb enabled and is set to 'Internet'.  

I am running Windows Mobile 5 on an HTC 8525.  I have ActiveSync 4.5 installed.  For the first three weeks I was able to sync to my device and also surf the net from my device using the desktop pass-through feature.  My friend took the device away on a trip for a day and when he brought it back I noticed that the pass-through feature no longer worked.  I don't know if he tried to connect to another network and the settings got hosed or if ATT pushed some patch to the phone.  Either way, I can still sync and browse files, I just can't get on to the internet.  Furthermore, checking the 'allow wireless connections' box in AS->File->Connections Settings seems to do nothing since my wlan is immediately disabled every time I plug the device in to the usb cable.  I have tried the following to no avail:

1. Used a different HTC 8525 with the same result

2. Installed ActiveSync on a different machine, no luck

3. Tried the registry edit [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows CE Services] "AllowLSP"=dword:00000000

4. Tried using ActiveSync 4.1

5. Played around with the connection settings and network adapter settings on the phone to the point that I have no idea what they were anymore

6. Reset the phone to its defaults, no dice

To test the connection I open IE and try to browse to www.msn.com.  The status in the bottom left of the IE window says "Connecting..." then "Locating..." then I wait for a while and I get a pop-up that says "The page cannot be displayed because the connection was lost.  Please try again"

My ActiveSync connection settings have usb enabled and 'This computer is connected to The Internet'.  

Another strange thing, when I try to open AS->File->Connection Settings it takes about a minute for the Connection Settings dialog to open.  What could make it hang?

I really am out of ideas on how to get this thing working again.  I am developing an application on the phone that requires internet and bluetooth connetivity.  I was remote debugging using VS 2005 and everything was working like a champ.  By the way, I am still able to remote debug, so that tcp connection with the device still works...I just can't get out to the internet.  My Windows Firewall has ActiveSync in its exception list.

Thanks for your help!

John

Another strange thing, when I try to open AS->File->Connection Settings it takes about a minute for the Connection Settings dialog to open.

# August 16, 2007 3:37 PM

jburnette said:

Sorry about that last post...I don't know how I managed to mix it all up.  Here is is again:

I am running Windows Mobile 5 on an HTC 8525.  I have ActiveSync 4.5 installed.  For the first three weeks I was able to sync to my device and also surf the net from my device using the desktop pass-through feature.  My friend took the device away on a trip for a day and when he brought it back I noticed that the pass-through feature no longer worked.  I don't know if he tried to connect to another network and the settings got hosed or if ATT pushed some patch to the phone.  Either way, I can still sync and browse files, I just can't get on to the internet.  Furthermore, checking the 'allow wireless connections' box in AS->File->Connections Settings seems to do nothing since my wlan is immediately disabled every time I plug the device in to the usb cable.  I have tried the following to no avail:

1. Used a different HTC 8525 with the same result

2. Installed ActiveSync on a different machine, no luck

3. Tried the registry edit [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows CE Services] "AllowLSP"=dword:00000000

4. Tried using ActiveSync 4.1

5. Played around with the connection settings and network adapter settings on the phone to the point that I have no idea what they were anymore

6. Reset the phone to its defaults, no dice

To test the connection I open IE and try to browse to www.msn.com.  The status in the bottom left of the IE window says "Connecting..." then "Locating..." then I wait for a while and I get a pop-up that says "The page cannot be displayed because the connection was lost.  Please try again"

My ActiveSync connection settings have usb enabled and 'This computer is connected to The Internet'.  

Another strange thing, when I try to open AS->File->Connection Settings it takes about a minute for the Connection Settings dialog to open.  What could make it hang?

I really am out of ideas on how to get this thing working again.  I am developing an application on the phone that requires internet and bluetooth connetivity.  I was remote debugging using VS 2005 and everything was working like a champ.  By the way, I am still able to remote debug, so that tcp connection with the device still works...I just can't get out to the internet.  My Windows Firewall has ActiveSync in its exception list.

Thanks for your help!

John

# August 16, 2007 3:38 PM

Kent said:

I have a HTC 8525 with WM6 and just started having this same problem.  Active Sync pass through when USB connected has been working for the past 3 months and no longer works today.  It has been 3-4 days since I used it so something changed in the past few days.

I did upgrade to ie7 last week?

Thanks!

Kent

# December 5, 2007 1:12 PM
Leave a Comment

(required) 

(required) 

(optional)

(required) 

Comment Notification

If you would like to receive an email when updates are made to this post, please register here

Subscribe to this post's comments using RSS

Page view tracker