The error is available on almost all versions of Windows, including Windows 7, 8, and 10. Official methods for resolving the problem are either unhelpful or too general but there have been users who have been able to resolve the problem using their own methods. We have gathered those solutions and put them together in an article for you to check out.
What Causes the “The content can’t be displayed because the S/MIME control isn’t available” Error?
The list of possible causes is pretty much well-known and users have used the causes to determine the right steps they needed to undertake in order to resolve the problem. Check out the list below in order to point out your scenario and use the proper method to resolve the problem.
Solution 1: Add Your OWA Page in Trusted Sites and Use Compatibility View
This is one of the most successful methods you can use in order to resolve the problem. Adding a page into Trusted Sites in Internet Explorer will circumvent some issues and Compatibility View can make it more compatible with various versions of both Internet Explorer and OWA. Make sure you perform both steps of this method in order to resolve the problem!
Solution 2: Install S/MIME
If you haven’t installed S/MIME in the first place, you can’t expect it to work. Also, if you have recently performed updates to your operating system, it’s quite possible that the update reset some settings or even broke the installation so it’s good to perform the process again by following the steps below!
Solution 3: Run Internet Explorer as an Administrator
Installing S/MIME to use alongside Internet Explorer sometimes requires that you possess administrative permissions over the browser. You won’t be able to perform this method if you don’t actually have admin rights on the computer. Running the browser as an admin shouldn’t have negative consequences.
Solution 4: Deselect a Checkbox in Internet Options
There is an option inside Internet Explorer » Internet Options which has caused problems to OWA users regarding the use of S/MIME. Deselecting it has managed to help some users. It’s quite easy to do this so make sure you don’t give up troubleshooting before trying out this final method!
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