Fix for Your administrator has blocked this application because it potentially poses a security risk to your computer

Today, when I tried to run an eDiscovery Export (ClickOnce application), an error appeared stating “Your administrator has blocked this application because it potentially poses a security risk to your computer” and “Your security settings do not allow this application to be installed on your computer”.

your administrator has blocked this application

This message seems to be due to strict or incorrect settings in Internet Options of Internet Explorer. However, in 9 out of 10 cases, only a few registry settings need to be changed.

Solution for Your administrator has blocked this application because it potentially poses a security risk to your computer

You will most likely solve the Application Install – Security Warning by adjusting 3 registry values. By default, .NET Framework settings block the installation of all ClickOnce applications. Which is a good thing in the first place, because running any application without knowing could lead to serious security issues. However, in this case, we want to allow the application to run. In the following how-to, you learn how to fix Your administrator has blocked this application because it potentially poses a security risk to your computer:

How to fix Your administrator has blocked this application because it potentially poses a security risk to your computer

Step 1. Open Registry Editor

Click Start windows logo start, type Registry and open Registry Editor. If you are asked if the application is allowed to make changes, click Yes.
If in doubt about required permissions, run Registry Editor as administrator

Step 2. Navigate to HKLM\SOFTWARE\Microsoft\.NETFramework\Security\TrustManager\PromptingLevel

change promptinglevel to enabled

Navigate to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\Security\TrustManager\PromptingLevel
For all register entries, the Data is probably set to Disabled

Step 3. Set Internet, LocalIntranet and TrustedSites to Enabled

promptinglevel set to enabled

Double click and adjust the Data to Enabled for these entries: Internet, LocalIntranet, TrustedSites

Step 4. Re-run the application

application install security warning clickonce

Try to run the application again. You do not have to restart the browser. You should now be prompted to Install (or to Not Install) the application

Step 5. Install the application

Click Install to install and run the application.

Step 6. Uninstall the application if needed

If you ever want to remove the application, go to Programs and Features / Apps & Features. From there you can uninstall.

Additional information

The error “Your administrator has blocked this application” may occur in your browser, such as Internet Explorer, Microsoft Edge, Google Chrome or Mozilla Firefox. But the window may also popup when you double-click the application file from Windows File Explorer. In either case, changing the registry keys may solve your problem.

The error has also been reported with the installation of Windows 10 IoT Core Dashboard, BIM 360 Glue Desktop, Fidelity Active Trader Pro and Deltek Ajera.

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Joseph

Excellent tips! Helped me install Fidelity Active Trader Pro

Chalky

Great help. I had this issue on both IE and Chromium Edge and couldn’t figure out why.

Ole Henrik Oftedal

Very happy. This solved our problem with our application on a Windows 10 computer. THANK YOU VERY MUCH !!!

Nomonde

Thank you so much, this has solved our problem

amr

Thank you vey much

Jack

Excellent! I was able to run Fidelity Active TraderPro. Thank you for this!

P.S. after running the application I restored the registry settings to disabled. The application still ran after doing this, just in case anyone was curious.

Last edited 2 years ago by Jack
Guuz

Thanks!

Mike

Amazing, worked thank you for installing a medical practice management software (Gensolve) which downloads files from their server.
I did have to set ‘Enabled’ to ‘UntrusteSites’ temporarily for the application to install.
Tried many other things with no success, much appreciated.

Franco

Worked like a champ. I screen clipped the registry so I could restore it after. Even the software company couldn’t help.

Regina

Amazing!! This worked for a site that is specifically to run the Digital Certificate of my person (Europe and South America use Digital Certificates instead of DocuSign, etc. to make sure you are the person you say you are). Do I have to return everything back to “Disabled” when I’m done? (I did anyway, but wanted to make sure.) I was struggling to two hours taking firewalls and security off. I did, however, have to go into Properties first of the app I was downloading to check the UNBLOCK button. But it worked! Thank you, thank you, thank you!

Jim

I wasted hours with Fidelity tech support trying to resolve the problem of not being able to run activetraderpro. This fix solved all that. Thanks!

Gerhard Sollner

Worked great (!) for Fidelity Active Trader Pro.

kavi

still not resolved

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