Slashes are legal characters in passwords. You can verify this yourself by manually changing the password of a test user. \Password1\ for example.
The issue will be with the upload file format. I have not found an issue with punctuation in the csv user upload file. But, on the other hand, I have found many times that csv output directly from Excel is badly formatted. I usually just open the csv file in a real text editor, then immediately save it again. Then it uploads fine.
The issue will be with the upload file format. I have not found an issue with punctuation in the csv user upload file. But, on the other hand, I have found many times that csv output directly from Excel is badly formatted. I usually just open the csv file in a real text editor, then immediately save it again. Then it uploads fine.