Unable to Create Document Types/Templates in Umbraco 16 on Production Database (Works Locally)

Questions
1

i all,

I’m running Umbraco 16 with a SQL Server 2016 production/test database (deployed to IIS). Everything works fine on my local setup with a local DB, including creating document types, templates, content editing, and publishing.

However, when I connect my Umbraco instance to the production/test database (same Umbraco version), I get 400 Bad Request errors on management API calls (e.g. /umbraco/management/api/v1/template) and I cannot create new document types or templates.

Umbraco CMS displays an error "Master template not found" in the interface for creating a document type, while the Chrome developer console shows errors indicating "Could not create template" and "UUI-TAB needs a label." (Captioned by AI)
Umbraco CMS displays an error "Master template not found" in the interface for creating a document type, while the Chrome developer console shows errors indicating "Could not create template" and "UUI-TAB needs a label." (Captioned by AI)1919×1033 232 KB

I’ve confirmed:

  • The DB compatibility level is 130 (SQL Server 2016)
  • The DB user has full permissions (tested insert queries successfully)
  • No custom middleware is blocking API calls just Clean install tried clean db two times.
  • i run my project locally with my local db it works fine, i change the connection string to my dev server .then it stops working

..

2

[FIXED]
was able to fix it by disabling the WebDAV module for this specific web app.

<system.webServer>
   <modules>
      <remove name="WebDAVModule"/>
   </modules>
</system.webServer>

thanks to Sebastian v1412 apierror method not allowed

3

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