Windows Server

Certificate Error: Unable to access Windows Admin Center (WAC) from the Web

Windows Admin Center is a locally deployed, browser-based app for managing Windows servers, clusters, hyper-converged infrastructure, as well as Windows 10 PCs. It is a free product and is ready to use in production.

When prompted with an error when trying to access WAC from other browsers saying the site is not secure.
Root cause: A self-signed certificated option was selected during the first installation


Uninstall WAC, and on the WAC Installation page
- Select the second option and 
- specify the thumbprint and click on install.

And click on Install. This should fix the issue. Other Possible problems –

I hope you found this blog post helpful. If you have any questions, please let me know in the comment session.

Notify of
Inline Feedbacks
View all comments
Would love your thoughts, please comment.x