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"The URL contains an invalid path" error occurs when you try to access an Exchange 2013 OWA website

Symptoms



Consider the following scenario. You try to access a Microsoft Exchange 2013 Outlook Web Access (OWA) website that is published through a Microsoft Forefront Unified Access Gateway 2010 server. The server is running Service Pack 3. In this scenario, you may receive the following error message:

You have attempted to access a restricted URL, the URL contains an invalid path.

Additionally, multiple warning messages that resemble the following are logged in the Web monitor event log:



Note These messages are followed by a description that the URL contains an invalid path.

Example URLs
The following are URL examples that may not match the predefined URL ruleset:

Embedded OpenType font styles (Rule will allow this path but applies only to gif|css|wav|wrng|png|ico)
/owa/15.0.620.29/owa2/resources/styles/segoeui-regular.eot?
/owa/15.0.620.29/owa2/resources/styles/segoeui-semibold.eot?
/owa/15.0.620.29/owa2/resources/styles/segoeui-semilight.eot?

MP3 sound files ( (Rule will allow this path but applies only to gif|css|wav|wrng|png|ico)
/owa/15/0/620.29/owa2/resources/sounds/calendar_notify.mp3?UA=0
/owa/15/0/620.29/owa2/resources/sounds/email_notify.mp3?UA=0

Additional fonts (Rule allows themes but not from /owa/AUTH/ path)
/owa/auth/15.0.620/themes/resources/segoeui-regular.eot?
/owa/auth/15.0.620/themes/resources/segoeui-regular.ttf
/owa/auth/15.0.620/themes/resources/segoeui-semibold.ttf
/owa/auth/15.0.620/themes/resources/segoeui-semilight.eot?
/owa/auth/15.0.620/themes/resources/segoeui-semilight.ttf

ASHX ( (Rule allows this extension but not for /owa/MANIFESTS/ folder path)
/owa/manifests/appCacheManifestHandler.ashx?manifest=0&layout=mouse&UA=0
/owa/manifests/appCacheManifestHandler.ashx?manifest=0&layout=tnarrow&UA=0
/owa/manifests/appCacheManifestHandler.ashx?manifest=0&layout=twide&UA=0
/owa/manifests/appCacheManifestHandler.ashx?manifest=1&layout=mouse

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Cause

This problem occurs because some URLs that may be used during client Exchange 2013 OWA access are not matched by the Regex expressions in the *.RuleSet_ForExchangePub2013.ini files. These rulesets are included in the new Exchange 2013 publishing templates in Service Pack 3 for Forefront Unified Access Gateway 2010.

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Resolution

To resolve this problem, install Service Pack 4 for Microsoft Forefront Unified Access Gateway 2010.

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Workaround

To work around this problem, manually add the missing Exchange 2013 URLs to the existing Forefront Unified Access Gateway rulesets.

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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References

See the terminology Microsoft uses to describe software updates.

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Keywords: kbqfe, kbfix, kbexpertiseinter, kbsurveynew, kbbug, kb

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Article Info
Article ID : 2909182
Revision : 1
Created on : 1/7/2017
Published on : 11/27/2013
Exists online : False
Views : 223