Windows Path Length Limit Reached

Revision as of 17:57, 20 May 2021 by Steve410 (talk | contribs) (Created page with "==INTRO== In many cases, Windows has a default limit of how many characters can make up a complete path to a file. That includes the length of the folder names. The limit...")
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INTRO

In many cases, Windows has a default limit of how many characters can make up a complete path to a file. That includes the length of the folder names. The limit is supposedly 260 characters for a path name. But, we've seen it actually stop at 255.

To get around this limit, Windows allows you to make a change in the registry that will allow you to have a much longer path (in terms of number of characters in the path name) up to 32767 characters. A big increase!

Make a registry edit to increase path length

Two ways to make the change. Either run the registry editor yourself (Method 1) or run a prepared script to do it for you (Method 2)

=Method 1: Edit the registry by-hand, if you're comfortable making registry changes

Run Regedit.

The key to change is located at:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem

The actual key change:

"LongPathsEnabled"=dword:00000001

Then...

Reboot!

Method 2: Run a script to make the change for you.

  • Download to your windows system by clicking:
https://support.cs.jhu.edu/Win-LongPathsEnabled/Win-LongPathsEnabled.zip
  • Unzip the downloaded file Win-LongPathsEnabled.zip
That will result in a file called LongPathsEnabled.reg
  • Double-click LongPathsEnabled.reg to run that file.
  • Reboot to activate the change.