SharePoint Designer is unable to retrieive data source details when adding a datasource

Question

I want to create a Wiki page that shows some content from a SharePoint Online list. I am using SharePoint Designer to customize the Wiki page. I added an Empty Data View and after I added a data source, the data source detail windows is blank and it has a message: Server was unable to process request --> Specified method is not supported

Steps to reproduce:

1. Create a Wiki Page Library (through add an app)
2. Edit the page in SharePoint Designer
3. Under the Home tab, click Advanced Mode
4. In the .aspx file, click between the two Zone Template tags
5. Under the Insert tab -> Data View -> Empty Data View
6. In the .aspx file, click between the Data Source tags
7. Under the Insert tab -> Data Source -> Select the SharePoint list to display
8. In the Data Source Details window on the right, click on the DataView 1... link. Click OK to close the Data Source Properties window

I also get the same error when I click the Refresh data source link at the bottom of the Data Source Window or the Refresh Data button under the Data View Tools Options tab

Has anybody seen this before or have successfully added a SharePoint list view to a web page using SharePoint designer?

Answer 1

Hello @Eric Shen ,

I can reproduce your issue in my environment.

Please follow steps to perform the workaround：

1) Click INSERT tab >> Data View >> select the specific list directly.

2) On the OPTIONS tab, click Data Source Details to display this list's data details.

Thanks,
Echo Du

==============

If an Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Answer 2

I've also cleared the SharePoint designer cache by following these steps...

Clear cache (This is only applicable if the SharePoint Desinger is not a fresh install)

a) On the local computer, browse to the following folder:

C:\Users\<username>\AppData\Local\Microsoft\WebsiteCache

b) Delete all the files and folders that are present.

c) On the local computer, browse to the following folder:

C:\Users\<username>\AppData\Roaming\Microsoft\SharePoint Designer\ProxyAssemblyCache

d) Delete all the files and folders that are present.

e) On the local computer, browse to the following folder:

C:\Users\<username>\AppData\Roaming\Microsoft\Web Server Extensions\Cache

f) Delete all the files and folders that are present.