SSO v4.5.1 / v4.5.3 / v4.6 - Installation error


While installing or upgrading Single Sign On v4.5.3 the following error will occur.



Exit/Error code: -532462766


An ASP.NET update has been installed that is preventing the SSO installer from completing.

Please remove this update from Programs and Features.



You may see the following prompt when you uninstall the update.


Select Yes. You may also choose to hide this update until the issue is permanently resolved. 

Microsoft ASP.NET MVC Security Update MS14-059 (KB2990942) 

Note: The KB # listed might vary depending on if it was installed by a bundled patch.

Note: Once you have completed the SSO install you will be able to reapply the Microsoft update.



Install SSO v4.7 as the issue is now resolved in the latest installer build.

  • See this guide for SSO v4.7
  • SSO v4.7 installer can be found here.  




All AuthAnvil servers with ASP.NET v5.1 installed upgrading to SSO v4.5.3



If you have any questions or need some help, we would be happy to assist. Open a case at or send an email to




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