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Windows Networking





The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.

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How can I  modify or delete the "Default Switch" within the Windows 10 Hyper-V virtual switch manager?

These options and buttons are always greyed out.

Win 10 Hyper-V virtual switch settings
Free Tool: SSL Checker
LVL 12
Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

A few years back I had SolarWinds Real-Time NetFlow Analyzer working with my Cisco 3750x switch. Recently we had some suspicious traffic so I installed a new version of the software on a Win 10 machine. I can connect through the software to my switch, I can see all of the interfaces but none of them show NetFlow enabled. When I click on the interface I want to monitor then click "Start Flow Capture" I get a 'NetFlow is not detected on the selected interface'.

How do I get this port configured correctly to capture NetFlow data?

Additional Facts:
IOS version 15.0(2)SE6

Config on switch:
int gig <port to be monitored>
ip flow ingress
ip flow egress

ip flow-export source <port to be monitored>
ip flow-export version 5
ip flow-export destination <IP of my Win 10 machine> 2055

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Per this thread- 
I tried to run the ip nbar protocol-discovery and the ip route-cache flow on the port to be monitored. Neither of those commands were accepted on that port.

Any help is appreciated.

I've had users on other forums attempt to help me by pointing me to towards flexible netflow configurations that use the command ip flow monitor <name of monitor> input applied to the interface they want to monitor. My switch does not allow flexible netflow to be applied to non-service module ports. What I'm trying to monitor are the standard gigabit interfaces.

The netflow commands I can apply to those standard interfaces are those listed above: ip flow ingress and ip flow egress. How do I get netflow analysis that way?
I'm looking for a guide or step-by-step instructions on properly configuring Hyper-V networking for both the host and virtual (guest) Server 2016 Datacenter operating systems.

In my environment, the Server Datacenter 2016 base operating system is currently running on a server system board that has 4 physical NICs. Currently, only NIC 1 has a network cable connected to it and the other three NICs are disabled within Device Manager.

This means that the base operating system and the Hyper-V virtual operating systems are all currently using the same NIC. This Hyper-V switch is configured as an external network.

I have run these commands from an elevated PowerShell (on the Hyper-V base server) which then return the results shown below.

Please provide me with this information on how to properly configure the Hyper-V virtual networking. If any additional information on my networking environment or Server 2016 Datacenter operating systems are needed please let me know.


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Windows PowerShell
Copyright (C) 2016 Microsoft Corporation. All rights reserved.

PS C:\Users\administrator> get-netadapter

Name                      InterfaceDescription                    ifIndex Status       MacAddress             LinkSpeed
----                      --------------------                    ------- ------       ----------             ---------
vEthernet (Virtual Swi... Hyper-V Virtual Ethernet …
With Routing and Remote Access Service on W2003r2 you were  able to see virtual network interfaces created by e.g. Cisco IPsec VPN client, TAP adaptors like those used by OpenVPN, and similar. Hence you could manage them at least partially with RRAS, including setting up NAT. This allows to use RRAS as a dial-in router even for some "exotic" VPN clients not intended to be used that way ;-).

Since W2008 this is no longer feasible. Software-managed vNICs are just not visible, even if the Network and Sharing Center displays those. And so neither routing nor NAT is available.
Does anyone have any clue about how to trick RRAS into a similar behaviour as before?

I'm in need of on-demand dial-out connections with full automation and control using batch files from remote (LAN PCs), and have that implemented and running for W2003r2 (only running for that sole purpose). Target OS can be W2008r2 and up.
Using a different router software (like a Linux VM) is only an option as last resort, as I won't be able to integrate something else than OpenVPN and maybe PPTP (sic!) / L2TP/IPsec ;-).
What PowerShell command or set of commands can I use to change a "Private network" type to a "Domain network" type within the "Network and Sharing Center" applet within Windows 10? (See the screenshots.)

Domain networkPrivate network
Apache Tomcat 8 with IIS and Apache Connectors getting null request.getRemoteUser() when trying to get to a secure application.  I have multiple applications and one in particular keeps throwing this error.  I am logged in already but when I go to this application I get this error.  I have tried the old suggestion of tomcatAuthentication="false" and that is making no difference.  This particular application is old and the newer ones built in Grails are not having issues.  A team mate thinks something in IIS is stripping something out causing this however other applications are working so it would be hard to say it is stripping things out.  This is all running on Windows server 2016.  Https is in use and there is a firewall involved.  Ports have been allowed.  Old applicaiton with the issue is running an old version of Struts.
Need assistance in two Powershell / batch scripts / free tool which can send alerts for;

  1. We are running Exchange 2013, is there a way to set an alert when the message queue is above 50 messages? and  Exchange Services are down.
  2. Disk space (C: drive) is less then 8GB, and Resource utilization is more then 90%.
We have a few laptops that are running Windows 10 Pro that are sometimes (often) using up to 75% of internet bandwidth. We have a Windows 2008 R2 AD network with mostly Windows 7 machines . When this happens, they slow the entire network down even when they are not being used.

I can see in our Sonicwall firewall that these particular machines are consuming large amounts of bandwidth when this is happening. We've scanned the machines with Symantec Endpoint Protection and Malwarebytes and there is no indication of malware or viral activity, and all indications point to Windows Updates.

We are new to using Windows 10 in the environment so I am not sure if there is a misconfiguration or something else going on. This does not happen to any Windows 7 machines, only 10. Once the machine is powered-off the internet usage goes to normal levels.
Dear Experts, when review the event viewer in Server 2012R2, we see this Null ID in logon task. But it should be the account username, am I right?

The logoff event works fine AFAIK

Could you please suggest? We'd like to trace the logon/logoff activities of domain users. Many thanks!
I Need some help setting up NTFS permissions.
I have a folder full of excel sales scorecards for each sales person.  They need to be in the same folder for linking and totaling, but each user should only be able to see their own scorecard.
I have been able to set permission that allows the sales group permission to access the folder, and see the file list, but not access the files. I can give individual users permissions to their file by assigning it directly on the file.  The only problem I have is that the user can't save the file after making updates.
Here is what I currently have setup:
First ACL
Applies to: This folder and subfolders
Transverse folder
List Folder
Read Attributes
read extended attribute
create files
create folders
write attributes
write extended attributes
read permissions

Second ACL
Applies to: files only
Create files
create folders
write attributes
write extended attributes

Then on each excel file, I give the individual users full control
Free Tool: Subnet Calculator
LVL 12
Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

We are having a problem trying to login to particular Amazon EC2 Server through RDP

For no apparent reason we will get this message
Even though no other users are logged in

And the only resolution is to reboot the server.

Any ideas?  Where could I see what is causing this?

Following the narrowing down of an issue that seems to be purely DNS related with a client. I am looking to rebuild the DNS if this is at all possible.

Some tips on how to do this along with other associated tasks would be great.

Just for those who are curious, I could ping to sever and connect to shares by ip etc. I did re-add the forwarders after removing and they wouldn’t verify until I rebooted the modem which I thought was interesting.
I have a laptop joined to a windows domain, and an account with domain admin rights for a temporary basis. I am trying to run some MBSA (baseline security analyser) scans of around 20 servers for patch verification exercises prior to an audit. When I try to ping the server based on server name, I always get request timed out, and also the MBSA scans fail, yet when I try and RDP onto the server itself, it logs me in fine, so its clearly online. What technical issues could affect the ping response and MBSA scan from working? they are a blend of 2012 and 2008 R2 windows servers.

In case its of any use, the MBSA error is "message 67 - the network name cannot be found', I entered the exact same servername for MBSA, Ping and RDP.
Im trying to export some WMIC to html tables, and Ive managed to get some of the commands to work, such as:-
wmic /output:test.html computersystem list full /format:htable

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But when I try is with other objects, such as OS:-
wmic /output:test.html os list full /format:htable

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I get the message:-

Description = Invalid query

Any ideas how I can use the OS record and get it into a html table?

Thank you in advance
I have a Windows 10 Pro machine that has recently lost it's ability to share network resources. I have a USB printer attached to the PC and I am unable to access the printer or the shared folders over the network. When I perform an ipconfig /all, NetBIOS over TCP/IP is disabled, even though it has been explicitly enabled through the WINS tab on the IPv4 settings and also enabled in registry. Also, every since Hyper-V has been enabled, there is a new network adapter called vEthernet default switch. The thing that that is odd about this is that even though DHCP is enabled, it picks up an IP address outside of the normal network range. The network is basically one flat network (192.168.1.x) and the vEthernet adapter gets a 172.168.x.x address. What's also strange about this adapter, no matter if I disable it, uninstall it, uncheck IPv4 and IPv6 in the properties, once I restart the computer, it shows up again and becomes active. I have created a new vEthernet adapter (vEthernet LAN) in Hyper-V Manager that I can use for my VM, however, every time I reboot the computer, I have to disable to original vEthernet adapter because it comes up as an Unidentified Network and again on a different subnet. Only after I disable the original vEthernet adapter will the VM work using the manually created vEthernet LAN adapter. However, the VM still cannot access the USB printer connected to the host machine due to the host not sharing it's network resources. I have even confirmed SMBV1 and …
Not able to authenticate Eduroam service. I run radtest and find attached the result.
My Ricoh Scanner seems to be trying to send SMB scans over the wrong port.

We use SBS 2011 and want to have our new Ricoh printer/scanners to scan to shares on the server.
Our server has SMB and it receives scans to shares on the server through port 445.
However, the new scanners only have the old NetBIos port 138 and 139 ports.
I don't know how to make the scanners connect properly to the server, nor how to make the server accept the ports that the scanner uses.
I have the sense that even if were to add the scanners ports 138 &139 to the SMB protocol on the server, that it would still not work because the new Ricoh scanners are trying to use an outmoded NetBT protocol.

Does anyone know how to make this work?
I have a lockdown GPO being applied to machines for kiosk purposes. It's been fine so far, but now I need to be able to view PDFs in the browser. I've tried adding "AcroRd32.exe" to the setting "Run only specified Windows applications", but it's still popping up with the attached. Is there someway I can see the actual process being blocked so I can allow it? I've tried running Sysinternals' Process Explorer and that's how I found AcroRd32.exe. There isn't any other process that seems to run when I click the link that is supposed to bring the PDF up in the browser.

I had this question after viewing UUID for OEM Bios no embedded Ethernet mac address , after vista II OS , is it protecting or abnormal ?.


This topic case can be closed as:

UUID is modifiable feature as many as no limited with motherboard changed .  Vista II DUID with IPv6 can not be changed followed rules of NIC and IANA.

Question recreated as:
Vista II DUID ahead of dhcpv6 valid from my ISP Apr. 2014 , broadcasting to the networks, taken away authentication  and rollback me as its client of "server" .  ISP prolonging for treating this since 2012 with dhcpv4 only to later it having had dhpv6 .  The Modem.ISP only can release an fe80:: layer IPv6 to the gateway and as dns.ipv6 by the ipcfg /all command reported.

Whose DHCPv6 broadcasting DUID embedded OEM motherboard.mac replaced off and lost ?
ipcfg modem dns
Gateway assigned fe80:: local layer IPv6 from the stranger upper device , unauthenticated "Server"  device / platform?
modem gateway IPv6 fe80::

Your writing  back are expected on  how to modify this and calculate the mass caused inside the complexity .  Let have a valid IPv6 directly from ISP.   ISP routering service not relied these years by 1996 , because the poor firewall and account Username duplicated in high/low case. While the local wireless …
Dear Experts, we have 3 different domains and each of them has its own AD server and domain users. However the users have not joined domains. The request is building 1 ShareFile Server for all 3 domains.

With only 1 domain, it is easy when we just need to join the ShareFile to domain and grant the permissions based on domain users, groups but we do not know how to do it with 3 domains. Do you have any idea? Please help!

In other words, can we authenticate an user from a domain to a different AD server in different domain?
Microsoft PFE Remediation for Configuration Manager   breaks Lan\Wlan switching on HP 840G3.
HP 3LS has identified this SCCM Client health service as the problem that breaks auto-switching.
Has anyone else see this issue?

Windows Networking





The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.