better_webdav_doc

doc/webdav.md

@@ -38,6 +38,35 @@ To enable it:
 - Go to "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters\BasicAuthLevel".
 - set "BasicAuthLevel" to "2".
 
+### Fix Windows Big file >50Mb file download.
+
+To avoid security problems, Windows doesn't allow to download >50Mb file
+by default from WebDAV share.
+
+To change file size limit of Windows :
+- Launch regedit.
+- Go to "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters".
+- set "FileSizeLimitInBytes" as DWORD decimal to the number of bytes needed,
+for example. 1Go is 1073741824, 500Mo is 524288000.
+
+see here for more info:
+https://support.microsoft.com/en-us/help/900900/folder-copy-error-message-when-downloading-a-file-that-is-larger-than
+
+### Fix Windows 30 Minutes timeout with big file.
+
+Windows add also a 30 minutes timeout for big file. If you want download who take
+more time, set the default timeout value.
+
+To set the default timeout value:
+- Launch regedit.
+- Go to "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MRxDAV\Parameters"
+- set "FsCtlRequestTimeoutInSec" DWORD decimal to more than 1800 second (30Min).
+for example : 3600 : 1H , 14400 : 4H , 86400 : A day (24H).
+
+see here more info:
+https://support.microsoft.com/fr-fr/help/2668751/you-cannot-download-more-than-50-mb-or-upload-large-files-when-the-upl
+
+
 ## OSX
 
 Webdav OSX addresses are similar to:
@@ -52,6 +81,7 @@ http://<yourinstance>/webdav/ (unsecure)
 - Your login/password will be ask. Use your Tracim credentials.
 - After that, your webdav access should be mounted.
 
+
 ## Linux
 
 Webdav Linux addresses are similar to: