Hi all,

we are trying to call the MapPoint ActiveX control from a COM+ application developed in VB. Whenever we try to call the MapPoint object we get the following error in the event log along with the failure:

"Access denied attempting to launch a DCOM Server. The server is:
{15A40122-24D2-4FDB-8155-5F65FCE7017F}
The user is [user]/[DOMAIN], SID=S-1-5-21-796845957-839522115-1708537768-1121. "

Our error trapping also shows the following error:

"Error No: 70"," Error: Permission denied"

has anybody encountered this before, any ideas???


TIA


Taff

Your COM+ application runs under certain credentials (user). Run dcomcnfg.exe and adjust access and launch permission for desired DCOM service to work with the COM+ app user. This has to work.

Hi, I've never used the DCOMCnfg utility before, and I'm not sure if I'm doing it right, it's certainly not making a difference!

I loaded up the utility, went to the "Default Security" tab and added my COM+ user to the default launch permissions (the middle section).

I tried the others too, but wan't entirely sure if I was heading down the right track so I set it back to how it was before.

I think this may be the right solution though, because when I run my COM+ App as Administrator it works fine.

I remember a similar problem in the past. Every first time a user starts up MapPoint, it requires user interface to click the intro message. This happens only the very first time a user starts up MP.

If your COM app runs in a Windows station without interactive user interface, this dialog will block MapPoint for ever, or until the process is killed...

Hope this helps

I had the same problem when hosting on xp, to fix I had to untick the checkbox in Security>>Authorization>>"Enforce access checks for this application". This is how all the other server activated objects are setup in com+, once I did that I was able to start it without errors. Before that I couldn't even start it when logged in as admin and using dcomcnfg to start it...

hope that helps.