Article ID: 2619030 - View products that this article applies to.
Not sure what release of Office 365 you're using? Go to the following Microsoft website:
Am I using Office 365 after the service upgrade?
When you try to start the Office 365 Desktop Setup Tool, you receive the following error message:
Cannot continue. The application is improperly formatted. Contact the application vendor for assistance.
If you click Details in the dialog box, you receive a detailed error message that's like the following:
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PLATFORM VERSION INFO
Windows : 6.0.6002.131072 (Win32NT)
Common Language Runtime : 2.0.50727.4214
System.Deployment.dll : 2.0.50727.4016 (NetFxQFE.050727-4000)
mscorwks.dll : 2.0.50727.4214 (VistaSP2GDR.050727-4200)
dfdll.dll : 2.0.50727.4016 (NetFxQFE.050727-4000)
dfshim.dll : 4.0.31106.0 (Main.031106-0000)
Deployment url : https://bposast.vo.msecnd.net/ClickOnceConnector/Office365DesktopSetup.application
Server : Microsoft-IIS/7.0
Below is a summary of the errors, details of these errors are listed later in the log.* Activation of https://bposast.vo.msecnd.net/ClickOnceConnector/Office365DesktopSetup.application resulted in exception. Following failure messages were detected:
+ Your Web browser settings do not allow you to run unsigned applications.
COMPONENT STORE TRANSACTION FAILURE SUMMARY
No transaction error was detected.WARNINGS
There were no warnings during this operation.
OPERATION PROGRESS STATUS
* [9/1/2011 6:23:51 PM] : Activation of https://bposast.vo.msecnd.net/ClickOnceConnector/Office365DesktopSetup.application has started.
Following errors were detected during this operation.
* [9/1/2011 6:23:51 PM] System.Deployment.Application.InvalidDeploymentException (Manifest)
- Your Web browser settings do not allow you to run unsigned applications.
- Source: System.Deployment
- Stack trace:
at System.Deployment.Application.ApplicationActivator.BrowserSettings.Validate(String manifestPath)
at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension, BrowserSettings browserSettings, String& errorPageUrl)
at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)
COMPONENT STORE TRANSACTION DETAILS
No transaction information is available.
This issue occurs for the following reasons:
To resolve this issue, use one of the following methods.
Method 1: Set the security level of the Internet zone in Internet Explorer to Medium-highTo do this, follow these steps:
Method 2: Enable Internet Explorer to run signed programs, and then add the Office 365 application server to the Trusted sites list If the security level of the Internet zone in Internet Explorer is set higher than the Medium-high level and you don't want to change it, add the Office 365 application server to the Trusted sites list, and then enable Internet Explorer to run signed applications. To do this, follow these steps:
Still need help? Go to the Office 365 Community
Article ID: 2619030 - Last Review: October 24, 2013 - Revision: 11.0