All years are particularly troubling. I think a call to support is probably best. You can try the FORCE install on at least 2018 https://accountants-community.intuit.com/articles/1859152-running-the-lacerte-web-setup-with-the-for...

I assume you have rebooted the server and all work stations. 

Simpler posts https://accountants-community.intuit.com/questions/1850298-does-anyone-know-how-to-fix-this-error-ex...

I do see xmlrt190.bpl listed as a file for each year, so hopefully the FORCE install will overwrite and make things good.