It doesn't appear to be listed in the Online tree (having checked the name on the other box that's still OK), and the Roaming Extension Manager shows it as not locally installed, with the Download button disabled:
I found this blog post, and see the details below (extract of install log) when reinstalling from the 10.0.37 service update.
11/6/2023 2:54:36 PM - Microsoft VSIX Installer
11/6/2023 2:54:36 PM - -------------------------------------------
11/6/2023 2:54:36 PM - vsixinstaller.exe version:
11/6/2023 2:54:36 PM - 17.5.4074+g1de9468fa7
11/6/2023 2:54:37 PM - Extension Details...
11/6/2023 2:54:37 PM - Identifier : DynamicsFnO.DeveloperTools
11/6/2023 2:54:37 PM - Version : 7.0.7068.67
11/6/2023 2:54:37 PM - Description : /A collection of tools for Visual Studio that are used to develop applications on Finance and Operations (Dynamics 365) for Platform Update61.
11/6/2023 2:54:37 PM - SupportedFrameworkVersionRange : [4.5,)
11/6/2023 2:54:48 PM - Supported Products :
11/6/2023 2:54:48 PM - Microsoft.VisualStudio.Community
11/6/2023 2:54:48 PM - Version : [17.0,18.0)
11/6/2023 2:54:48 PM - ProductArchitecture : amd64
11/6/2023 2:54:48 PM - Found installed product - Visual Studio Professional 2019
11/6/2023 2:54:48 PM - Found installed product - Global Location
11/6/2023 2:54:48 PM - VSIXInstaller.NoApplicableSKUsException: This extension is not installable on any currently installed products
Versions highlighted are, I believe, VS 2022 & above, so I've installed VS2022 professional, then ran the extension VSIX, and that appeared OK, but when I open VS2022 now, I get the message below
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The 'VSCommonPackage' package did not load correctly.
The problem may have been caused by a configuration change or by the installation of another extension. You can get more information by examining the file 'C://Users//Admin857115e2a3//AppData//Roaming//Microsoft//VisualStudio//17.0_12f12d82//ActivityLog.xml'.
Restarting Visual Studio could help resolve this issue.
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Restarting, and/or clearing cache - as described on this StackOverflow thread - doesn't help. Any suggestions please?