SharePoint Designer 2013 won't connect to SharePoint 2019 sites

Question

Hello,

I have been writing custom SharePoint Designer 2010 workflows in SharePoint 2019 Server on-premises (2010 workflows are the only type available to me in this iteration of SharePoint 2019). Recently, SharePoint Designer 2013 has stopped connecting to any of the site collections I work in. I get one of two error notifications, it either tells me that SharePoint Designer does not support editing non-SharePoint sites or it tells me it could not connect without returning any details. I have seen reference to clearing 3 user Cache locations on my desktop and also one in Regedit. I've cleared these multiple times without success. I've switched versions of SharePoint Designer trying both the 32 and 64 bit versions of SPD 2013 and the 64 bit version of 2010. The admin for these site collections cannot replicate the issue.

Answer 1

Hi @Cross, Matthew [USA]，

SPD Error: Microsoft SharePoint designer does not support editing non-SharePoint sites,To resolve this issue, you may want to try the following steps:

1.Check if client integration is enabled in Web Application settings from the Central Admin site.

2.If the above process couldn't help, you may refer to the following steps:

• Press Windows+R > enter regedit;
• Go to HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Common\Internet\WebServiceCache\AllUsers\office15client.microsoft.com, 
• Delete all the subfolders of the ...\office15client.microsoft.com folder.

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