When you use Web folders (WebDAV) to access the repository (through http://<server>:<port>/repository), you receive the following error:
This error also occurs for folders that have spaces in the folder names. If you view the folders in WebDAV, the spaces are replaced with "+" characters, as per standard URL encoding. The folders are accessible through Workbench without any problems, and do not display the "+" characters.
Set up the WebDAV folder pointing directly to the folder itself instead of the root of the repository for the web folder. Then you can access the folder correctly in Windows Explorer.
To use this workaround, set up a network location for each folder, with spaces in the names.
This issue appears to be a bug in the WebDAV functionality, as indicated in the following references:
The behavior is dependent on the URL encoding present in the browser and the WebDAV access. For example, Internet Explorer can properly decode the URL and convert the spaces. However, the WebDAV facility provided by Microsoft does not have that feature.