![]() The full list of WebDAV verbs that need to be allowed are referenced elsewhere on this page.Ĭlient integration must be enabled at the web application level and the 'UseRemoteAPIs' permission must be 'true' If the verbs are not listed there, then you may need to collect Failed Request Tracing to identify the source of the response. If the IIS logs show the response is coming from the server, open IIS Manager and check the HTTP verbs tab in Request Filtering. The most common alternate responses are 404 Not Found if the verb is blocked or a 302 Redirect to a login page for third party authentication providers that do not adhere to the MS-OFBA specification.Īction: Verify that the request is making it to the server with simultaneous network traces or check the IIS logs. If these are not the responses received by the client then typically the request is being blocked, either by the HTTP verbs setting of the Request Filtering in IIS, a URL-Rewrite rule or perhaps by a device in the middle. A few years ago the 403 status code began being used for responses where Forms Based Authentication (FBA) and claims authentication is used but the requesting agent is unable to process a 302 redirect to a login page (see the MS-OFBA Protocol specification). Unlike the 401 response, submission of additional authentication will not provide access. If a 403 response is received normally that means the resource is present but there are inadequate privileges to interact with it. ![]() A valid 401 response will include Negotiate, NTLM, Basic, Digest, Bearer). The PROPFIND request expects a 207 Multi-Status response as a success.Ī 401 or 403 response is an indication of inadequate authentication information. If the OPTIONS call receives a 200 Success response, the Webclient (and Office client) will assume that WebDAV is supported (even if the returned list of Allowed verbs does not include WebDAV verbs). Requests issuing OPTIONS and PROPFIND requests must be responded to with a success or an authentication response. The users do not necessarily need access and there does not even need to be a Site Template selected it just needs to exist. See - SharePoint: Office client integration errors when no root site existsĪction: If a Root site is missing, create one. Although the path segment does not have to allow WebDAV, it must be present. There are certain circumstances where the WebClient will walk the path as it would for an SMB file share. With those files at their latest versions, undesired behavior is typically due to a misconfiguration or a limitation of the implementation. ![]() 23375) and shell32.dll (minimum version in Windows 7 should be. 23542) but is also reliant upon webio.dll, winhttp.dll ( minimum version in Windows 7 should be. The service consists of webclnt.dll, davclnt.dll and mrxdav.sys (minimum version in Windows 7 should be. Note: Although Windows 7 and Windows Server 2008 R2 exited support Jan 14, 2020, there are still many machines that will not be upgraded so the information below will still reference issues and resolutions that may be relevant to those operating systems.įollowing the re-writing of the service in Windows Vista, the feature set was considered mature and further changes were primarily bug fixes and security updates. This is typically seen by the user as mapped drives or a Windows Explorer view. As a mini-redirector it allows native Windows applications to interact with the remote file system through native networking API calls similar to the local file system and other remote file storage servers (such as CIFS and SMB). The Windows implementation of the DAV protocol as a mini-redirector is handled by the WebClient service. Distributed Authoring and Versioning (DAV) is an extension of the HTTP protocol that allows the user to interact with and manipulate files stored on a web server.
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