When Windows refuses to delete a file or folder because of invalid characters in its name, there’s a solution using the system’s short names (8.3 format).

Step by step

1. Open the command prompt and list short names

dir /x

This displays files with their short names in an additional column — something like MYFILE~1.

2. Delete using the short name

For files:

del MYFILE~1

For folders:

rmdir MYFOLD~1

The short name bypasses the problematic characters, allowing deletion to proceed normally.