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Is there a limit to the number of allowed characters for Windows computer names? If so, what is the limit?

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I've heard it will handle over 9,000 before you start to see issues. –  Josh K Mar 16 '10 at 20:42
    
The text field in the dialog for changing the name on XP seems to have a 64 character limit. –  FogleBird Mar 16 '10 at 20:53
    
The other issue you could run into is UNC paths. There is a max length for UNC paths (256 characters???) so if your machine name is long, and you have long share names, or deep directory structures, you could have issues. –  BillN Mar 16 '10 at 23:13

1 Answer 1

up vote 17 down vote accepted

According to MS KB, maximum length varies based on the name resolution protocol.


NetBIOS computer names:
Minimum name length
1 character.

Maximum name length
15 characters.


DNS computer names:
Minimum name length
2 characters.

Maximum name length
63 characters.

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