Plugin invalid signature


I have a problem with my plugins in the extension manager.
I have sketchup pro installed on a machine, windows 10 and my plugins are all signed.
But in my new machine, with the same operating system, the plugins are invalid signature and so I can not validate my paid plugins, such as clothworks.
Has anyone else been through this problem or can you help me?


Has anything changed with the plugin files so that they don’t match anymore the expected signature?

How did you install the plugins, redownloaded directly from Extension Warehouse, or transplanted (copied) from the previous plugins folder? Try deleting (or backing up and removing) some and reinstall them from Extension Warehouse.


Soon after installing the program, the default plugins (advanced camera, sandbox, trimble conect …) are invalid signature.
Plugins are installed directly by the extension manager.