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Hyper-V Mac Address Conflict (Event 16945)

June 22, 2015, 7:51 pm
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Revision 1 posted to TechNet Articles by Jefferson Castilho on 6/22/2015 7:51:16 PM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Tags: Hyper-V, has image, Has TOC, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

June 22, 2015, 7:53 pm
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Revision 2 posted to TechNet Articles by Jefferson Castilho on 6/22/2015 7:53:23 PM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.

Tags: Hyper-V, has image, Has TOC, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

June 22, 2015, 7:56 pm
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Revision 3 posted to TechNet Articles by Jefferson Castilho on 6/22/2015 7:56:10 PM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.
In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue we need to change the MAC address of the "Team" created.
To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".
Tags: Hyper-V, has image, Has TOC, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

June 22, 2015, 7:58 pm
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Revision 4 posted to TechNet Articles by Jefferson Castilho on 6/22/2015 7:58:29 PM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.
In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue we need to change the MAC address of the "Team" created.
To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings click Advanced / Mac Address / in "Value" enter the new Mac address consists of 12 characters and it numeral or letter. After the change click "Ok".

Tags: Hyper-V, has image, Has TOC, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

June 22, 2015, 8:01 pm
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Revision 5 posted to TechNet Articles by Jefferson Castilho on 6/22/2015 8:01:29 PM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.
In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue we need to change the MAC address of the "Team" created.
To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings click Advanced / Mac Address / in "Value" enter the new Mac address consists of 12 characters and it numeral or letter. After the change click "Ok".



After the change will execute the command "Get-NetAdapter | sort MacAddress" and he showed the "Team" is interface with the new Mac Address has been changed in step accomplished.



Conclusion

As we can see the problem was solved by changing the Mac Address.
Tags: Hyper-V, has image, Has TOC, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

June 22, 2015, 10:18 pm
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Revision 6 posted to TechNet Articles by Edward van Biljon on 6/22/2015 10:18:03 PM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.
In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue we need to change the MAC address of the "Team" created.
To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings click Advanced / Mac Address / in "Value" enter the new Mac address consists of 12 characters and it numeral or letter. After the change click "Ok".



After the change will execute the command "Get-NetAdapter | sort MacAddress" and he showed the "Team" is interface with the new Mac Address has been changed in step accomplished.



Conclusion

As we can see the problem was solved by changing the Mac Address.
Tags: Hyper-V, has image, Has TOC, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

July 3, 2015, 10:10 am
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Current Revision posted to TechNet Articles by Richard Mueller on 7/3/2015 10:10:51 AM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.
In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue we need to change the MAC address of the "Team" created.
To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings click Advanced / Mac Address / in "Value" enter the new Mac address consists of 12 characters and it numeral or letter. After the change click "Ok".



After the change will execute the command "Get-NetAdapter | sort MacAddress" and he showed the "Team" is interface with the new Mac Address has been changed in step accomplished.



Conclusion

As we can see the problem was solved by changing the Mac Address.
Tags: (Event 16945), en-US, has image, has Other Languages, Has TOC, Hyper-V, Jefferson Castilho, Multi Language Wiki Articles
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Hyper-V Mac Address Conflict (Event 16945)

July 3, 2015, 10:10 am
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Revision 7 posted to TechNet Articles by Richard Mueller on 7/3/2015 10:10:51 AM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.
In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue we need to change the MAC address of the "Team" created.
To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings click Advanced / Mac Address / in "Value" enter the new Mac address consists of 12 characters and it numeral or letter. After the change click "Ok".



After the change will execute the command "Get-NetAdapter | sort MacAddress" and he showed the "Team" is interface with the new Mac Address has been changed in step accomplished.



Conclusion

As we can see the problem was solved by changing the Mac Address.
Tags: Hyper-V, has image, Has TOC, Multi Language Wiki Articles, en-US, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

September 19, 2015, 6:26 pm
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Revision 8 posted to TechNet Articles by Ken Cenerelli on 9/19/2015 6:26:51 PM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.
In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue we need to change the MAC address of the "Team" created.
To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings click Advanced / Mac Address / in "Value" enter the new Mac address consists of 12 characters and it numeral or letter. After the change click "Ok".



After the change will execute the command "Get-NetAdapter | sort MacAddress" and he showed the "Team" is interface with the new Mac Address has been changed in step accomplished.



Conclusion

As we can see the problem was solved by changing the Mac Address.
Tags: Hyper-V, has image, Has TOC, Multi Language Wiki Articles, en-US, has comment, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

September 25, 2015, 1:03 am
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Revision 9 posted to TechNet Articles by Edward van Biljon on 9/25/2015 1:03:26 AM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.
In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue we need to change the MAC address of the "Team" created.
To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings click Advanced / Mac Address / in "Value" enter the new Mac address consists of 12 characters and it numeral or letter. After the change click "Ok".



After the change will execute the command "Get-NetAdapter | sort MacAddress" and he showed the "Team" is interface with the new Mac Address has been changed in step accomplished.



Conclusion

As we can see the problem was solved by changing the Mac Address.
Tags: Hyper-V, has image, Has TOC, Multi Language Wiki Articles, en-US, has comment, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

October 22, 2015, 5:04 pm
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Revision 10 posted to TechNet Articles by Jefferson Castilho on 10/22/2015 5:04:33 PM

Table of Contents



Introduction

In this article we will address a "Warning" what happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshoting in a Hyper-V servers found this Warning that was alarming that my "Nics" was Mac Address in Conflict.

I saw that the error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.
In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue we need to change the MAC address of the "Team" created.
To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings click Advanced / Mac Address / in "Value" enter the new Mac address consists of 12 characters and it numeral or letter. After the change click "Ok".



After the change will execute the command "Get-NetAdapter | sort MacAddress" and he showed the "Team" is interface with the new Mac Address has been changed in step accomplished.



Conclusion

As we can see the problem was solved by changing the Mac Address.
Tags: Hyper-V, has image, Has TOC, Multi Language Wiki Articles, en-US, has comment, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

February 13, 2016, 8:24 pm
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Revision 11 posted to TechNet Articles by Ken Cenerelli on 2/13/2016 8:24:13 PM

Table of Contents



Introduction

In this article we will address a "Warning" that happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshooting in Hyper-V servers and found this Warning that was alarming that "Nics" Mac Address was in Conflict.

The error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.

In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue change the MAC address of the "Team" created. To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings: click Advanced / Mac Address / in "Value", enter the new Mac address consisting of 12 characters and as numeral or letter. After the change click "OK".



After the change, execute the command "Get-NetAdapter | sort MacAddress" and the "Team" is interfaced with the new Mac Address has been changed in step accomplished.



Conclusion

As we can see the problem was solved by changing the Mac Address.
Tags: Hyper-V, has image, Has TOC, Multi Language Wiki Articles, en-US, has comment, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Mac Address Conflict (Event 16945)

October 19, 2018, 8:18 am
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Revision 12 posted to TechNet Articles by Somdip Dey - MSP Alumnus on 10/19/2018 8:18:43 AM

Table of Contents


Introduction

In this article we will address a "Warning" that happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshooting in Hyper-V servers and found this Warning that was alarming that "Nics" Mac Address was in Conflict.

The error was alarming below.



After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.

In "Team" created it inherited the same MAC address Interface "NIC1"



To resolve this issue change the MAC address of the "Team" created. To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".



The adapter settings: click Advanced / Mac Address / in "Value", enter the new Mac address consisting of 12 characters and as numeral or letter. After the change click "OK".



After the change, execute the command "Get-NetAdapter | sort MacAddress" and the "Team" is interfaced with the new Mac Address has been changed in step accomplished.



Conclusion

As we can see the problem was solved by changing the Mac Address.
Tags: Hyper-V, has image, Has TOC, Multi Language Wiki Articles, en-US, has comment, has Other Languages, Jefferson Castilho, (Event 16945)
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Hyper-V Troubleshooting: Mac Address Conflict (Event 16945)

October 19, 2018, 5:35 am
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Revision 13 posted to TechNet Articles by Peter Geelen on 10/19/2018 12:35:54 PM

Table of Contents

Introduction

In this article we will address a "Warning" that happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshooting in Hyper-V servers and found this Warning that was alarming that "Nics" Mac Address was in Conflict.

The error was alarming below.

After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.

In "Team" created it inherited the same MAC address Interface "NIC1"

To resolve this issue change the MAC address of the "Team" created. To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".

The adapter settings: click Advanced / Mac Address / in "Value", enter the new Mac address consisting of 12 characters and as numeral or letter. After the change click "OK".

After the change, execute the command "Get-NetAdapter | sort MacAddress" and the "Team" is interfaced with the new Mac Address has been changed in step accomplished.

Conclusion

As we can see the problem was solved by changing the Mac Address.

Tags: Hyper-V, has image, Has TOC, Multi Language Wiki Articles, en-US, has comment, has Other Languages, Jefferson Castilho, EventID 16945
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Hyper-V Troubleshooting: Mac Address Conflict (Event 16945)

February 27, 2019, 12:39 pm
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Revision 14 posted to TechNet Articles by Carsten Siemens on 2/27/2019 8:39:16 PM

Table of Contents

Introduction

In this article, we will address a "Warning" that happens in the Hyper-V and Windows Server 2012 R2 with Hyper-V Role installed.

Requirements

The Role of the Hyper-V role installed.

Procedure

Troubleshooting in Hyper-V servers and found this Warning that was alarming that "Nics" Mac Address was in Conflict.

The error was alarming below.

After some checks found that the problem was in a "Team" that was created with the server network interfaces. With the command "Get-NetAdapter | sort MacAddress" showing all Macs Address all Network Adapters.

In "Team" created it inherited the same MAC address Interface "NIC1"

To resolve this issue change the MAC address of the "Team" created. To do this go to Device Manager / Network Adapters / Select the "Network Adapter called" Microsoft Network Adapter Multiplexor Driver / Properties ".

The adapter settings: click Advanced / Mac Address / in "Value", enter the new Mac address consisting of 12 characters and as numeral or letter. After the change click "OK".

After the change, execute the command "Get-NetAdapter | sort MacAddress" and the "Team" is interfaced with the new Mac Address has been changed in step accomplished.

Conclusion

As we can see the problem was solved by changing the Mac Address.

Tags: Hyper-V, has image, Has TOC, Multi Language Wiki Articles, en-US, has comment, has Other Languages, Jefferson Castilho, EventID 16945
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