Valid characters for network share

What characters are allowed and not allowed in Windows network share names?

For example, are spaces or apostrophes allowed? E.g. \\srv1\my share\ and \\srv1\foo'bar\

Refer to the official microsoft documentation, pretty much all is allowed but slashes, angular brackets etc.

https://docs.microsoft.com/en-us/windows/desktop/fileio/naming-a-file

To add a bit of information, localized char, like é, è, à, etc.., in a share name can get non unicode compliant application to behave badly.

In example QuickBook will throw random error while openning a DB on a share with localized char.

As such I suggest to use non localized share name even if technically you can use them.

I've recently ran across an issue with "#" when in Outlook email and creating hyperlinks to folders. The hyperlinks are on LAN shared folders. Users can successfully link to a folder with a "#" in the name but not sub-folders of the folder with "#" in the name.

S:\Folder\Sub-Folder\folder\FOLDER 9\ | (GOOD) S:\Folder\Sub-Folder\folder\FOLDER 9\Folder – 1\Folder\Folder\Folder | (GOOD) S:\Folder\Sub-Folder\folder\FOLDER 9\Folder - 1\Mary #5\ | (GOOD) S:\Folder\Sub-Folder\folder\FOLDER 9\Folder - 1\Mary #5\Folder\ | (FAILED)

Same result via UNC.

Hope this helps.