WinRAR 5.91 not starting?

The issues in late August with the revoked MICROSOFT AUTHENTICODE CODE SIGNING CERTIFICATE have been resolved. We have installed new certificates so now all WinRAR 5.91 language versions use the new certificate.

We recommend that you go to our WinRAR Downloads page to download and install the updated 5.91 version.

When you see a message like this, then you are trying to use the previous version, so go to the link above.