Security: Invalid Signature

When you try to load an executable file or add-in, a dialog indicates that there may be a security issue.

Issue: Executable files or add-ins that are loaded into Revit can include a digital signature to guard against malware.

To protect you against potential malware threats, the Invalid Signature dialog displays when one of these conditions are met:

• The file was modified (intentionally altered or secretly tampered with) after the file was digitally signed.
• The file was corrupted in transit or when it was being digitally signed.
• The digital certificate was revoked by the publisher, indicating that files signed by this certificate may be compromised.

Solution: Do not load the file. Contact the publisher to obtain the latest edition of the file with the correct digital signature. Try to load the file again.