Actually, I stumbled upon this when I decided to try out Office 2010
beta. I haven’t found any official documentation about how to connect to
Windows Live SkyDrive with WebDAV (or any
API),
so I’m not sure how well supported this will be in the future. If you
find any word about this from Microsoft, please let me know in the
comments. The good news is that it works. The bad news is that it is
very slow, but being 25 GB for free I guess you get what you pay for
speed-wise (understandably).
[Update: New info about a tool I wrote to find out the addresses for WebDAV discussed below]
There is now a tool available that can determine the addresses you need for your WebDAV access to SkyDrive.
It is available on CodePlex here. You can download the console application and run it from a command line. There is also a
WPF
application (seen below) if you have the latest version of .NET 3.5
SP1. More info in CodePlex site. But read the background below to know
how I got there and what to do with the information that the tool
provides.
But let me start at the beginning with a brief introduction to Office 2010 beta. If you find this boring, scroll down to
here.
Microsoft Office 2010 and installing the beta
I had actually decided to part from Microsoft Office in favor of more
lightweight applications like Google Docs and OpenOffice. For two
reasons: price and size. So I haven’t installed Office 2007 on any of my
newer computers or laptops for the last six months or so in order to
ensure that I don’t need it anymore and I have gotten by pretty well.
The application I’ve missed the most is probably Outlook. At the same
time it is the application where the hate/love relationship is the
greatest. I really like working with it but at the same time it feels
way too big, bulky and complex for something that should be simple: mail
and calendar (the way I see it). Too much
MAPI baggage I think.
Then I listened to
Windows Weekly with Paul Thurrott
about a new installation option for Office 2010 beta. It is called
Click-To-Run and sounded interesting since it uses an application
virtualization technology called
App-V
that means that you can install and run the application side by side
with whatever you have on your computer without risking changing any
system settings (which especially affects Outlook, had I had Outlook
2007 installed).
I decided to give Office 2010 an extra chance and now I’m glad I did. Not only for discovering WebDAV access to
SkyDrive. Everyone can download, install and use Office 2010 beta until october 2010 when it expires, but you do need a Windows Live ID.
Of course, there are a hundred-and-one
SKUs
(different packing of included applications etc) to choose from for
Office 2010 also. No, I shouldn’t be so sarcastic about that since it
does mean that if you don’t need everything in the full suite you will
be able to get it for a lower price. But it is a pain to keep track of
all the combinations.
What I’m getting to is that Click-To-Run only seems to be available
for the “Home and Business” SKU, at least during the beta period. So go
and
download and install it here
(requires registration via a Windows Live ID). The installation
experience was smooth but a little weird. You see, Click-To-Run also has
some sort of streaming built in so that different parts are downloaded
when needed. In practice this meant that it looked as though only
PowerPoint was installing since that was the screen shown during most of
the installation. But I realized that was because an introductory
PPT-file is automatically shown as the first thing after installation.
Also, beware that one (or two?) dialogs didn’t activate as the topmost
window and therefore I missed answering them (which is why the
installation seemed to be stuck for a while).
One great thing about configuring Outlook 2010 that really impressed
me was that I only had to specify my e-mail address for Outlook to
figure out on which server my mail was located and by which access
method it could connect. Maybe I shouldn’t be impressed since it usually
is that easy for ordinary POP3/IMAP access, but still – a great
improvement that has awakened my interest in Microsoft Office.
Another thing I like already is that the big circle button in the top
left corner of the window is gone and has been replaced by a File tab
(albeit a “special” tab) . That makes the interface much more uniform – a
strip of tabs – and maybe even I can find the ribbon likable…
Microsoft Office 2010 and the web
The first thing that interested me, and that led to the discovery of
WebDAV for SkyDrive was “Save to SkyDrive”. Yes I know – get to the
point!! – not yet…
Paul Thurrott mentioned this feature in the netcast and it was the
first thing I tried. Under the File tab and the Share menu option you’ll
find “Save to SkyDrive”. Of course, I assume you already have a
SkyDrive account so just login and you will be presented with your
folders.
The next step in this screen dump is to double click the Public
folder. Note however that this is really slow (for me, at least) and
that Excel is unresponsive for a minute or two. Lets hope we can
attribute this to beta software. Have patience, and you will (hopefully)
be prompted with a dialog box to specify the file name, which is also
what gave the WebDAV functionality away.
Also, before this dialog box appeared, the status bar gave away an
address. I have removed the part that is unique to every user below (a
guid), and changed it in the screen dump above.
Nice! My conclusion was that Office 2010 must be using WebDAV for this so I had to investigate this further.
Another surprise was that SkyDrive in the browser will obviously
support Office Web Applications, which means that you can view and even
edit the documents right there in your favorite browser (which is
Firefox, of course). At the moment, you can only view Word documents,
but you can actually edit Excel spreadsheets. Excel editing looks really
nice and is really hard to separate from the real application visually,
however it does not seem to have a lot of functionality. I couldn’t
find copy-down for instance. It remains to be seen just how much
functionality will be available, but it would be strange if Microsoft
didn’t try to at least match Google Docs Spreadsheets.
Steps to access SkyDrive folders with WebDAV in Windows Explorer
So, with this new information, here are the steps to connect to
SkyDrive folders using WebDAV and get access to their contents in
Windows Explorer. Note that I’m using Windows 7 (64-bit) and I don’t
know if this works in older Windows versions.
[Update: I first thought
that you could access SkyDrive folders without the sub domain mentioned
above. That is probably not the case, so I've revised my instructions.]
In order to determine what path to specify in Windows when connecting
via WebDAV, you either need to run my tool or use Office 2010. If using
Office 2010, create a document and share it to SkyDrive as described
above. When saving the document and specifying its file name, you have
the chance to look at the address bar and copy the path, in my example:
https://pxeptc.docs.live.net/b8c6f2e973a17512/^2Public
Actually, the folder name “b8c6f2e973a17512″ in the path is the same
as a personal sub domain when logging on to SkyDrive the normal way from
your web browser. It can look like
“http://cid-b8c6f2e973a17512.skydrive.live.com/”.
The sub domain “pxeptc” in my example is something derived from your
SkyDrive account and the specific SkyDrive folder you want to access via
WebDAV. So for every folder in SkyDrive that you want to access via
WebDAV, you have to share a document from inside Office 2010 to
determine this name.
In developing my tool, I saw that Office calls a web service to
determine the WebDAV addresses for each folder in your SkyDrive account.
That web service is located at http://docs.live.net/SkyDocsService.svc
but you can’t access it in your browser since it requires a Live ID
authentication token. (My tool fixes that.)
Also, some folders are special and “known” to the system much like
“My Documents” on your computer. That means that their name is not the
same as on the web page in SkyDrive. I have identified two such folders
that I have. In SkyDrive they are called “Public” and “My Documents”,
but in WebDAV they are called “^2Public” and “^2Documents”.
Also note that Windows recognize another way to specify this address
which I think is interpreted in the same way. So the following two
addresses would be equivalent:
https://pxeptc.docs.live.net/b8c6f2e973a17512/^2Public
\\pxeptc.docs.live.net@SSL\b8c6f2e973a17512\^2Public
To increase speed you should also make sure the following option is unchecked in Windows (if you don’t need it):
Control Panel, Internet Options, Connections, LAN Settings, Automatically detect settings
Conclusions
That’s it! Of course the maximum size of a single file is still
enforced (I just had to try…). Unfortunately I don’t think this will
work in other operating systems. I assume that the WebDAV part is used
according to the standard, so that should not be a problem. However, I
did notice when looking closer at the http communication that the server
wants to authenticate with Passport1.4 (
MS-PASS) which is Microsoft specific and I doubt that would work on Mac or Linux?
Also, it is very slow. Sure, you get what you pay for, but maybe
there will be more (payment) options with SkyDrive in the future now
that the sharing functionality from Office 2010 has been implemented. I
don’t think I would mind paying if the speed was there.
I suspect Microsoft has something up their sleeve when it comes to “storage drives in the cloud” (duh!
). Right now they have been silent for quite some time. I use another service, namely
Live Mesh,
for file synchronization. It works great (5 GB limit), but it has been
in beta for long now and Microsoft has discontinued all the developer
stuff (sdks) for that service and for all or most of Live Services also I
think. They are obviously up to something.
Unfortunately, there is no caching of files accessed over WebDAV.
Windows has a built in system for remote access of files on remote
locations called “Offline files”, but it only works on true Windows
paths (SMB) and not WebDAV. At least not that I know of. Therefore you
probably want to save to local disk and use a synchronization
application to put your files on SkyDrive.
For me as a developer the most important part of this story is that
there now is an api for SkyDrive access where there was none previously.
Not counting the screenscraping way of the
SkyDrive client library
by ghollosy on Codeplex. It worked great when I tried it, but I don’t
like to be in the hands of the web browser user interface on the site in
case that changes (more of a “when”, than “if”?).
Additional information about photos
In my SkyDrive account I also have photos. They are obviously not
exactly the same thing as a folder. I think they are somehow integreated
with Windows Live Photos or whatever the branding is. Maybe you can
have Windows Live Photos in your Windows Live account without having a
SkyDrive folder account?
Anyway, I also discovered that this WebDAV access works with photos
but I haven’t found a way to determine the sub domain needed for all my
photo folders. However, if you have the name of a photo folder, I got
Windows Explorer to do a redirect and tell me the name.
I just followed the pattern above and replaced the last part such as
“^2Documents” with the exact name of one of my photo folders. And what
do you know? Windows Explorer took a few seconds but then redirected to a
sub domain under docs.live.net and there were all my photos in that
folder!
How to set up WebDAV in Windows Explorer
If you need more specifics about how to create the WebDAV connection in Windows Explorer, here are the screendumps.
First, right-click on Network icon in Windows Explorer and select “Map network drive…”.
This dialog box will be shown:
[Update: I previously had
several screen dumps here, going through the whole wizard, but I later
found out that as long as you map a drive letter at the same time, you
can do it all from this single dialog box.]
Type in the path to the SkyDrive folder that you want access to in
the “Folder” field. You can use either the https path or the \\ path.
For instance:
\\pxeptc.docs.live.net@SSL\DavWWWRoot\b8c6f2e973a17512\^2Documents
Windows will ask for your SkyDrive login either way, but you should
also check the option “Connect using different credentials”. You don’t
have to check “Reconnect at logon” of course, but then you have to
remember the path the next time you need access. It may be a bit
irritating to have the SkyDrive mapped on every boot since Windows
probably will complain that it could not attach the mapped drive (if you
don’t store the password permanently).
Click Finish and after typing your SkyDrive user name and password you are done.
Remember that file access to a remote location using WebDAV probably
is a lot slower than local file access in all cases, and especially slow
on SkyDrive. Don’t be surprised if your waiting time increases when
saving files etc. Source: http://www.mikeplate.com