[wp-trac] [WordPress Trac] #26802: WordPress FTP component fails to update core on IIS7+

[WordPress Trac]

#26802: WordPress FTP component fails to update core on IIS7+
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 Reporter:  WinWPAdmin      |       Owner:  dd32
     Type:  defect (bug)    |      Status:  accepted
 Priority:  normal          |   Milestone:  Awaiting Review
Component:  Filesystem API  |     Version:  3.7.1
 Severity:  major           |  Resolution:
 Keywords:                  |     Focuses:
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Comment (by JanR):

 Just an informative addition to this ticket:

 This happens a lot on IIS web servers, unfortunately, and is always due to
 file locking by the worker process. Has been for years. This is why I set
 permissions to modify for my anonymous IUSR.

 WinCache uses a just as aggressive locking mechanism, in the past a lot of
 errors were reported on https://forums.iis.net/1164.aspx.

 Setting a different `FS_METHOD` ('ftpext' or 'ftpsockets', in stead of
 default 'direct') may resolve some locking issues though. See
 [https://codex.wordpress.org/Editing_wp-
 config.php#WordPress_Upgrade_Constants WordPress Upgrade Constants] for
 more information. But it's been years since I've played with these
 settings.

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Ticket URL: <https://core.trac.wordpress.org/ticket/26802#comment:11>
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