Once you change the folder name, all sync issues within the folder should be resolved. Search Articles. Issue When adding files to OneDrive for Business, a sync error appears. Cause Certain special characters are not supported by OneDrive for Business, which will cause sync errors. This article has not yet been validated. For years afterwards, that directory was the bane of file-tree-walking programs; it tested them to destruction.
Note that the directory must have contained entries. This doesn't affect the effectiveness of the anecdote, or the careful testing it describes.
Instead of creating a blacklist of characters, you could use a whitelist. All things considered, the range of characters that make sense in a file or directory name context is quite short, and unless you have some very specific naming requirements your users will not hold it against your application if they cannot use the whole ASCII table. It does not solve the problem of reserved names in the target file system, but with a whitelist it is easier to mitigate the risks at the source.
And any additional safe characters you wish to allow. Beyond this, you just have to enforce some additional rules regarding spaces and dots. This is usually sufficient:. This already allows quite complex and nonsensical names. In one of my applications, I used the same rules as above but stripped any duplicate dots and spaces.
Well, if only for research purposes, then your best bet is to look at this Wikipedia entry on Filenames. If you want to write a portable function to validate user input and create filenames based on that, the short answer is don't. Take a look at a portable module like Perl's File::Spec to have a glimpse to all the hops needed to accomplish such a 'simple' task. Windows will popup a message box telling you the list of illegal characters. The best suggestion I could come up with was to let the user name the file however he likes.
Using an error handler when the application tries to save the file, catch any exceptions, assume the filename is to blame obviously after making sure the save path was ok as well , and prompt the user for a new file name. For best results, place this checking procedure within a loop that continues until either the user gets it right or gives up.
Worked best for me at least in VBA. In Windows 10 , the following characters are forbidden by an error when you try to type them:. When creating internet shortcuts in Windows, to create the file name, it skips illegal characters, except for forward slash, which is converted to minus. In Unix shells, you can quote almost every character in single quotes '. Except the single quote itself, and you can't express control characters, because is not expanded.
Accessing the single quote itself from within a quoted string is possible, because you can concatenate strings with single and double quotes, like 'I'''m' which can be used to access a file called 'I'm' double quote also possible here. So you should avoid all control characters, because they are too difficult to enter in the shell.
The rest still is funny, especially files starting with a dash, because most commands read those as options unless you have two dashes -- before, or you specify them with. If you want to be nice, don't use any of the characters the shell and typical commands use as syntactical elements, sometimes position dependent, so e. When you are mean, your file names are VT escape sequences ;- , so that an ls garbles the output.
I had the same need and was looking for recommendation or standard references and came across this thread. My current blacklist of characters that should be avoided in file and directory names are:. Used as a path name component separator in Unix-like, Windows, and Amiga systems. Allowed in Unix filenames, see Note 1. Allowed in Unix filenames, see note 1. Colon is also used in Windows to separate an alternative data stream from the main file.
In other OSes, usually considered as part of the filename, and more than one period full stop may be allowed. In Unix, a leading period means the file or folder is normally hidden. Allowed, but the space is also used as a parameter separator in command line applications. This can be solved by quoting the entire filename. Maximum 9 character base name limit for sequential files without extension , or maximum 6 and 3 character extension for binary files; see 6. However some windows applications like Explorer, for example, may not behave correctly in this circumstance.
Below the Macintosh conventions will touch the fact that the colon ":" is an invalid character in the Macintosh Operating Systems. Under Windows and the NTFS file system the colon is an illegal character, because it is used to open alternate file streams. However all other characters can be moved on and off the NTFS file system if a program with Unicode support is used.
Because of this, migrating certain files and folders from OS 9 to OS X may cause unexpected behavior. This document is read-only. If you make any changes in the OLE object they cannot be saved because the document is read-only. This name is not in a directory This operation cannot be undone. Would you like to proceed? This operation will delete the selected workspace page. Are you sure that you would like to proceed? This request is not supported with the version of your ID file.
An ID file containing a hierarchical name is required. This bookmark is corrupt. Please delete and re-add it to your bookmark bar. The file is damaged, obsolete, or intended for a different operating system.
Delete the file and create a new desktop? Unable to open Name and Address Book names. Locations cannot be used until the problem has been corrected. Please refresh the design with the Address book template. After the design is refreshed, restarting Notes will create default locations. Unable to establish connection with LDAP server You and signer have no certificates in common; signer cannot be assumed to be trustworthy.
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