Cannot connect to DCOM port 135 error

[kungfupanda]

We get "Cannot connect to DCOM port 135 : Firewalled?" errorfrom multiple machines. We checked that the firewall were turned off.

[kungfupanda]

Resolved. It was actually firewall issue. Our network guy had to open the port on the router.

[kungfupanda]

Actaully, I didn't modify the GPO since it would impact hundreds PCs. I do have remote admin enabled on the problem machines. Actually, I manually enabled it by using the script you recommended in the post. http://www.lansweeper.com/forum/yaf_postst2967_Scan-over-VPN.aspx.

But most of our PCs have remote admin disabled and the active scan is working fine with them.

[kungfupanda]

Enabled Remote admin mode but got the same error. I checked other PCs with success in active scan and they actually have the Remote Admin mode disabled. So, "Cannot connect to DCOM port 135 : Firewalled" might be caused by something else ?

[Hemoco]

kungfupanda wrote:
Enabled Remote admin mode but got the same error. I checked other PCs with success in active scan and they actually have the Remote Admin mode disabled. So, "Cannot connect to DCOM port 135 : Firewalled" might be caused by something else ?

It might take some time for the GPO to be active.
Do you have remote admin enabled on the problem machines?

[Hemoco]

The remote admin mode in the netsh firewall show state should be enabled.

Firewall status:
-------------------------------------------------------------------
Profile = Standard
Operational mode = Enable
Exception mode = Enable
Multicast/broadcast response mode = Enable
Notification mode = Enable
Group policy version = Windows Firewall
Remote admin mode = Enable

Ports currently open on all network interfaces:
Port Protocol Version Program
-------------------------------------------------------------------
82 UDP Any (null)
82 TCP Any (null)
81 UDP Any (null)
81 TCP Any (null)
9524 UDP Any (null)
9524 TCP Any (null)
135 TCP Any (null)
5910 TCP Any (null)

[kungfupanda]

screen shot has been attached to my previous post

[Hemoco]

Click on "attach" on the right side of your post.

[kungfupanda]

How to post a screenshot?

[Hemoco]

Could you post the output of "netsh firewall show state" and a list of installed software please.