Unable to connect: Method not found [BUG] about xrmtoolbox HOT 7 OPEN

Same issue here after updating the toolbox to 1.2023.12.68 this morning.
Method not found: 'System.String Microsoft.Xrm.Sdk.OrganizationDetail.get_SchemaType()'

Still working with On Premises connections, but not with D365 connections using either Username/Password or Client Secret credentials

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And just to confirm, reverting to 1.2023.10.67 fixes the problem with these connections. Happy to help troubleshoot if I can help in any way.

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Hi everyone,
Sorry I was so silent but I have so much work these days, it's complicated for me to handle everything...
Anyway, the problem seems related to change in a Microsoft assembly.

Question : Are you allowing use of beta version of connection controls?

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Let me check whether updating the ToolBox, rather than just the connectionj control gives the same problem. I don't remember whether I just updated the Connection Control, or the entire toolbox, but I do not that reverting to the previous release of the toolbox fixed the problem. I'll experiment a bit more and get back to you....

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I tried the following:
Just update the connection controls to the latest beta
This breaks existing connections to online instances.

I then updated the toolbox itself to 1.2023.12.68. - this fixes the problem because it must use an older version of the connection controls. It prompted me to update my connection controls to the latest beta and I said no and everything continues to work.

So it looks like it's the beta version of the connection controls, rather than an update to the Tookbox which is causing the issue

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I was able to create new functional connections after the following steps: 1) fully deleting all the previously installed libraries in the Roaming folder, as well as the installation folder. 2) re-downloading the latest stable version, unzipping and running/installing. I did have to manually delete the Deployment tool, but that’s a plugin-specific issue and not covered here. I’m inclined to believe the underlying issue is a library/.dll issue, but I’m not necessarily knowledgeable to pin it down. For all practical purposes, this issue can probably be closed.

I had to resort to the same process of removing everything and re-installing. With the default tools present, I could re-create a connection that had stopped working after months of working correctly. I suppose the next process is adding back tools one at a time.

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