Article ID: 2619030 - View products that this article applies to.
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PROBLEM

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.
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Screen shot of Cannot continue. The application is improperly formatted. Contact the application vendor for assistance error message
If you click Details in the dialog box, you receive a detailed error message that's like the following:

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)

SOURCES

Deployment url : https://bposast.vo.msecnd.net/ClickOnceConnector/Office365DesktopSetup.application
Server : Microsoft-IIS/7.0

ERROR SUMMARY

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.

ERROR DETAILS

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.

CAUSE

This issue occurs for the following reasons:
  • The Internet Explorer security level for the Internet zone is set to High.
  • Internet Explorer is explicitly prevented from running programs in a lower security level for the Internet zone.

SOLUTION

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-high

To do this, follow these steps:
  1. Start Internet Explorer, and then on the Tools menu, click Internet options.
  2. Click the Security tab, and then click the Internet zone.
  3. Set the security level to Medium-high (the default setting), and then click OK.

    Collapse this imageExpand this image
    Screen shot of Securtiy table of Internet Options, highlighed Medium-high option

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:
  1. Start Internet Explorer, and then click Internet options on the Tools menu.
  2. Click the Security tab, and then select the Trusted sites zone.
  3. Click Custom level, and then click Enable under Run components signed with Authenticode, if this item isn't already enabled.

    Note Doing this enables Internet Explorer to run signed programs from sites in this zone.
  4. Click OK, and then click Sites.
  5. Add the server site to the Websites list in the Trusted sites zone.

Still need help? Go to the Office 365 Community website.

Properties

Article ID: 2619030 - Last Review: July 9, 2014 - Revision: 12.0
Applies to
  • Microsoft Office 365
  • Office 365 User and Domain Management
Keywords: 
o365 o365a o365e kbgraphxlink o365022013 o365m kbgraphic KB2619030

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