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Can I rename .mrt and .rct files?

I would like to rename the Virtual Disk file on some of our VMs … we are using Nakivo for backups, so the .rct and .mrt files are present for each .vhd(x) disk file on the VMs that we are backing up.

I know how to rename a .vhd(x) file … by shutting down the VM, physically renaming the file, reassigning the VM’s disk to the new filename, then restarting the VM.

My question is — what do I do about the .mrt and .rct file that accompany the .vhd(x) file?   Do I just manually rename those as well?  Or do I have to delete them somehow before renaming the disk file?  Or is there a utility that takes care
of all this?

I could not find documentation anywhere that talks about this. If there is doc I would appreciate a pointer to it … otherwise if there is a best practice for doing this then please explain 🙂

Thanks.  John

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What do you like most in your life?

What do you like most in your life? You will ask why this is to be a human

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Windows server 2016 standard hyper-v installation error 0x80073701

Dear Gurus,

I am getting error code 0x80073701 while installing Hyper-V in Windows Server 2016 Standard edition. Here are the major error logs generated in CBS.log during service activation.

  • Package:      Microsoft-Windows-Foundation-Package~31bf3856ad364e35~amd64~~10.0.14393.0      [HRESULT = 0x80073701 - ERROR_SXS_ASSEMBLY_MISSING]
  • Microsoft-Windows-Foundation-Package~31bf3856ad364e35~amd64~~10.0.14393.0,      status: 0x80073701, failure source: Resolve, start state: Installed,      target state: Installed, client id: DISM Package
    Manager Provider
  • Package_7939_for_KB4565511~31bf3856ad364e35~amd64~~      [HRESULT = 0x80073701 - ERROR_SXS_ASSEMBLY_MISSING]
  • Package_5940_for_KB4048953~31bf3856ad364e35~amd64~~      from file: (null) [HRESULT = 0x80073701 - ERROR_SXS_ASSEMBLY_MISSING]
  • Package_5940_for_KB4048953~31bf3856ad364e35~amd64~~’,      rah = ‘2’, manpath = (null), catpath = (null), ed = 0, disp =      0)[gle=0x80073701]

DISM Cleanup-Image StartComponentCleanup & RestoreHealth and command sfc /scannow have been executed multiple times and output is also successful for these commands, however Hyper-V
is still throwing same error code - 0x80073701.

Request help on this.

Thanks & regards,


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Hyper V, Tuya Convert

I am wanting to utilize Hyper V with Ubuntu to run the Tuya Convert terminal scripts and flash ESP8266 device with tasmota.

I have been able to install Hyper V, login to Ubuntu, complete the tuya convert install but am not able to utilize the built in WIFI or the WIFI dongle I have to make a connection with the ESP device. I used a Youtube instructional with similar features
except using VMWARE workstation. Difference is when this video plugins in the wifi dongle it asks what it wants to do with it. In hyper v I am unable to get any WIFI device to be seen by the virtual machine.

Can anyone help Please. 


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Restrictions running Hyper-V under W10 Professional x64?

Please help me understand the restrictions applicable to running under W10 Professional x64.  Some users are trying to run Hyper-V under W10 and it does not seem to support either more than one socket or more than 64 logical processors.

Please notice that this SS from the VM running  W10 Professional x64 as the host and guest.  Cinebench on a 64/128 core/thread AMD 3990X.  The VM recognizes all 128 threads (logical processors) but only runs half.  Can this be changed
with a setting or will it work in W10 Professional x64 for Workstation or Windows Server?  Thanks and enjoy, John.

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Failure to Boot on Red Hat Enterprise Linux (RHEL) or CentOS 8 using Hyper-V 2016

When using RHEL 8 or CentOS 8 as the guest operating system on a virtual machine (VM) running on a Microsoft Hyper-V Server 2016 host, the VM in some cases fails to boot and returns to the GRUB boot menu. It sometimes takes up to 20 attempts before the vm starts
(VM therefore stays stopped after 5 retries to boot kernel with grub)

It seems that it’s this bug: https://access.redhat.com/solutions/4796261

The following error is logged in the Hyper-V event log:

The guest operating system reported that it failed with the following error code: 0x1E

We are increasingly seeing this problem occurring on sone clusters and on others not

Any Ideas, Workarrounds, Fixes? For example is it possible to increase the retries of 5 somewhere? Concerning Red Hat the Problem will be solved in Hyper-V 2019, but as we have 200+ physical nodes it takes a lot of time to upgrade and we need some workarrounds

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Cannot enable the Promiscuous mode at Virtual switch for spanning port


How to enable Promiscuous mode at Virtual machines (Hyper-V) windows 2019 server

What the power shell command and version to run this command please?



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Windows Admin Center cannot connect to hyper v core 2019

I need help connecting to Windows server core 2019, I currently have Hyper-v core 2019 installed on a dell server, then install the windows admin center tool on another computer, using Windows 10 , when running the windows admin center application to connect
to hyper-v core, the following error message

"WinRM cannot complete the operation. Verify that the specified computer name is valid, that the computer is accessible over the network, and that a firewall exception for the WinRM service is enabled and allows access from this computer. By default,
the WinRM firewall exception for public profiles limits access to remote computers within the same local subnet.

Thanks for your support

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Windows 2012r2 Hyper-V Generation 2 firmware boot order No boot entries are configure

I have 2 host HyperV which configure in cluster. Inside the host there are multiple virtual machine. When I try to create new virtual machine usung Generation 2, its firmware boot order shows " No boot entries are configure". How to solve this
issues without break the failover cluster configuration? For your information, all virtual machine inside the host are production.


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Windows 2019 Hyper-V Host Static or Dynamic ram allocation

We are setting up a Windows 2019 Hyper-V VM running on a Physical Windows 2019 Server with 64GB of Ram. The Physical server will be running a few lightweight apps and also the Hyper V roles. I have been reading up on Dynamic V’s Static memory allocation
for the Hyper-V server and cannot decide which option is better. As I see it I have 2 ways I could go -

1. Allot 32GB of static ram to the Windows 2019 Hyper-V VM

2. Enable Dymanic Ram Set 8GB of Ram as a minimum Value, Set the Max Ram to 32GB with a 20% Memory buffer

We are planning to use the Hyper V for lightweight Remote desktop use.

What I am wondering is, does having Dynamic Memory instead of static cause speed issues for the VM when the amount of RAM required has to be increased or is this so fast that it is not noticeable.

Any thoughts would be appreciated 

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