Adware changed file type of extensionless file
31679
Remove association with blank file extension?
48947
Best way to remove file extension from a string?
93609
Windows wildcards with files having more than 3 characters extensions
119140
There is a length limit to Windows file extensions?
97140
Choose a default app for opening files with no extension?
47521
How do you associate the .exe file extension with a program in Windows?
146550
Is there a way to show only specific file extensions?
31060
How do I remove directories that begin with a dot after my server was infected?
114231
What is the relationship between MIME types and File .extensions?
126755
How to revert an accidental file association
131727
How to avoid messages from applications which I ran with a &?
122617
Does file extensions matter for browsers?
142453
Is there an easy way to change filetype association?
2354
Delete all files except files with the extension pdf in a directory
80197
Remove file extension from a file name string
156770
Removing files with strange names
94134
Files are read-only, and refuse to change