Can not connect to Lync Mobile Client | Access is Denied

So I am so happy Microsoft finally released mobile clients for WP7, Android, and yes even iOS!!!

I was a good admin and installed CU4 and the Mobile Connectivity add-on however it wasn’t working.

First thing to know about troubleshooting is to enable logging on the CLIENT. Its in Help –> About or near it depending on platform. Microsoft did a great job with the logging. One easy button emails everything you need to a email address of your selection.

Second thing is to do a basic test. Using a desktop browser, can you get to (replace with your SIP domain) and be offered a download OR does it give you access is denied message?

If you get accessed denied then you had the same problem I did. Turns out if you don’t use the bootstrap install method for the mobile connectivity pack IIS doesn’t get configured correctly.

While I am not totally sure I “think” what’s missing is in the web.config file this section:

<rule name=”autodiscover rule 1″ enabled=”true” stopProcessing=”true”>
<match url=”(.*)” />
<conditions logicalGrouping=”MatchAll”>
<add input=”{HTTP_HOST}” pattern=”.*lyncdiscover.*” />
<add input=”{REQUEST_URI}” pattern=”Autodiscover/AutodiscoverService.svc/root” negate=”true” />
<action type=”Rewrite” url=”Autodiscover/AutodiscoverService.svc/root” />

See access denied isnt for lync, its for you trying to browse the root directory of IIS. Without the above rule it delivers you to the root.

So anyways thanks to Matthew C. Evans from the comments on this excellent post on how to install Mobile Service:

If that is your problem then just uninstall the mobile component from add / remove programs (its headless don’t be scared when it just vanishes) then follow that post above for using the bootstrap to install the client. Like magic everything started working for me.

I had followed “most” of Microsoft’s directions but I think I hit page down one two many times and skipped the bootstrap method of installing the mobility service. Just IMO the installer should be fixed OR blocked from installing without being done via the bootstrap.

Hope it helps others, I couldn’t find any good posts about this one issue.

Please leave comments if you know anything additional about it.


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About Eric

My name is Eric Weintraub. I am an IT Professional with over 12 years of real world experience. I currently work as a Senior IT Manager for a large software company that develops products for Information Technology workers. Professionally, I love what I do and it shows in my work. Personally, I enjoy technology as a whole. Enterprise Technology, Social Media, and Mobile technologies are all things I follow. I also love to play golf, go snowboarding, cook, love to eat, and read. Also big on photography, check out my recent photography at and also Flickr: As much as I don’t have a lot of free time, I always come across things that I believe could help others. I just wanted to be able to share what I find with others. Thanks for reading the blog, please setup a RSS feed and keep in touch! Eric Weintraub

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