The file name extension is not valid. Supported file name extensions for Excel workbooks are .xlsx, .xlsm, .xlsb, or .xls.
The file in your FrontPage Web conflicts with the file in the source control repository. Rename your file to another file ...
The file in your SharePoint Designer site conflicts with the file in the source control repository. Rename your file to another ...
The file name '|' is not a valid short file name (maximum eight characters, plus a three-character file extension). The name ...
The file name extension is not valid. Supported file name extensions for Excel workbook templates are .xltx, .xltm, or .xlt. ...
The file name extension is not valid. Supported file name extensions for Excel workbooks are .xlsx, .xlsm, .xlsb, or .xls. ...
The file name extension is not valid. Supported file name extensions for Word document templates are .dotx, .dotm, or .dot. ...
The file name is not valid for a document that is saved in a workspace. It contains invalid characters, such as non-alphabetical ...
The file name is not valid. File name cannot: - contain any of the following characters:/ ? : \ " < > | # % - contain Unicode ...
The file name specified contains characters that are not permitted. File names cannot be named '.' or '.', cannot contain ...