OneDrive is not syncing multiple files with an illegal character in their filename. The character is a black dot symbol.

Screenshot of an example as I can't copy/paste the dot into text!

enter image description here

Can someone please help me with removing this character in a quick manner?

I ran a PowerShell script that successfully removed ! & { } ~ # % " characters, but this dot has me stumped!

I believe these files originated from a Mac.

Thanks in advance.

2 Answers 2

$Pattern = "[^a-zA-Z0-9\s]"
$mystring -replace $Pattern

for more information see here: https://blogs.technet.microsoft.com/heyscriptingguy/2014/12/06/weekend-scripter-remove-non-alphabetic-characters-from-string/

regex cheatsheet: http://www.rexegg.com/regex-quickstart.html

  • Thanks for your help. I ran the following command but no luck, no files were renamed. I believe I am close. Can you please help? Get-ChildItem | Rename-Item -NewName { $_.Name -replace '^[a-zA-Z0-9\s]+$','' }
    – Ash
    Jun 14, 2018 at 3:50
  • Sorry i did a typo in the regex. It should be: -replace '[^a-zA-Z0-9\s]+$]' note the ^ character. I've updated my post above. Alternatively you can also just use the regex '[\W]' to get the opposite of word characters. You also don't need the second blank parameter in the -replace statement. I've also update this in the answer above.
    – Jay
    Jun 14, 2018 at 5:16
  • I noticed another typo in my regex... I've simplified it and tested it working. Code I used was: Get-ChildItem -Path "c:\test" | Rename-Item -Path {$_.FullName} -NewName { $_.Name -replace '[^a-zA-Z0-9\s]' } Your code should look like: Get-ChildItem | Rename-Item -NewName { $_.Name -replace '[^a-zA-Z0-9\s]' } or Get-ChildItem | Rename-Item -NewName { $_.Name -replace '[\W]' } . Up to you which to use. \s is whitespace
    – Jay
    Jun 14, 2018 at 5:31

We can remove the Unicode characters using PowerShell. Refer here

Example $String -replace '[^\u0030-\u0039\u0041-\u005A\u0061-\u007A]+', ''

You can look up for the Unicode of the character online.

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