The given key was not present in dictionary

Nikos Sotiriadis 10

Hello,

I've an issue with Azure Migrate Appliance. The "Set up prerequisites" it's ok, my problem it's when I add discovery Source. I add my Hyper-V Host with mapped credentials and I've an error : "The given key was not present in dictionary". I run a diagnostic I've nothing wrong.

Someone have an idea ?

Thanks

SadiqhAhmed-MSFT 37,686 Reputation points Microsoft Employee

2024-03-21T06:28:57.8033333+00:00

@Nikos Sotiriadis Thank you for reaching out to us on Microsoft Q&A platform. Happy to help!

From the description, I understand that you are trying to add Hyper-V Host with mapped credentials and getting an error: "The given key was not present in dictionary"

Please refer to the solution posted here - https://learn.microsoft.com/en-us/answers/questions/830747/azure-migration-appliance-issue-applying-key-to-ap and let us know if that helps resolve the issue.
Nikos Sotiriadis 10 Reputation points

2024-03-21T07:50:47.0133333+00:00

Hello Dear ,

Thank you for your reply. I have already read this but it's not relevant with my case.

I can register appliance with out issue , however i receive this error when i try to add source such as HyperV Host .

If i put wrong credentials i receive error "Access denied" which is normal. Ig i use a local Administrator i receive error "the given key is not present in the directory"

I have followed all steps described here to prepare host

https://learn.microsoft.com/en-us/azure/migrate/tutorial-discover-hyper-v#prepare-hyper-v-hosts
SadiqhAhmed-MSFT 37,686 Reputation points Microsoft Employee

2024-03-21T17:47:00.6+00:00

@Nikos Sotiriadis Did you try with domain credentials?

Doc link - https://learn.microsoft.com/en-us/azure/migrate/add-server-credentials#add-server-credentials
Nikos Sotiriadis 10 Reputation points

2024-03-22T08:13:48.13+00:00

Hello ,

This part is to discover SQL and applications . Anyway thanks for your reply
SadiqhAhmed-MSFT 37,686 Reputation points Microsoft Employee

2024-03-22T09:36:32.8366667+00:00

@Nikos Sotiriadis You must be talking about the below:

Source link - https://learn.microsoft.com/en-us/azure/migrate/add-server-credentials#recommended-practices-to-provide-credentials

@Nikos Sotiriadis Were you able to resolve the issue?
Nikos Sotiriadis 10 Reputation points

2024-03-22T09:53:24.32+00:00

No problem remains , to be more specific error message appears while validating credentials (local or domain) in the 2nd step "Manage credentials and discover sources" / "add discovery source"
SadiqhAhmed-MSFT 37,686 Reputation points Microsoft Employee

2024-03-26T17:08:05.0133333+00:00

@Nikos Sotiriadis The issue needs a further deeper dive technically. I recommend you create a technical support ticket.

The ticket enables you to work closely with the support engineers and get a quick resolution to your issue.

Here is the link - https://docs.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request to create support case.
Nikos Sotiriadis 10 Reputation points

2024-03-26T18:33:10.2833333+00:00

Thank you , will do so.
SadiqhAhmed-MSFT 37,686 Reputation points Microsoft Employee

2024-03-28T07:15:20.9966667+00:00

@Nikos Sotiriadis Keep us posted if there is any progress and share the solution once the issue is resolved.

1 answer

Nikos Sotiriadis 10 Reputation points

2024-03-28T15:34:06.8333333+00:00

Solution was to increase winrm payload running bellow command (elevated ps) on both appliance and Hyperv Host(s)

Set-Item -Path WSMan:\localhost\MaxEnvelopeSizeKb -Value 8192

It will increase winrm payload from default 512kb to 8 mb
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1 person found this answer helpful.
SadiqhAhmed-MSFT 37,686 Reputation points Microsoft Employee

2024-03-28T18:19:08.49+00:00

@Nikos Sotiriadis Glad to know the issue is resolved. Thanks for sharing the solution with the community. This would certainly be helpful to others.
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