, you are likely trying to reactivate a "Classic License" on an older machine. Since SketchUp moved to a subscription model years ago, managing these older perpetual licenses can be tricky. Finding Your Serial Number and Authorization Code
, technical assistance and official downloads for this version are no longer available. Critical Limitations to Keep in Mind: Authorizing or Removing a License | SketchUp Help Sketchup Pro 2015 Serial Number And Authorization Code
to look up your details by entering the email address used for the purchase. Within the App , you are likely trying to reactivate a
Typing is safer than copy-pasting, as some PDF or email viewers can turn dashes into "bashes" that the system won't recognize. Add License to finalize. Important: Known Issues & End of Support SketchUp 2015 is now an unsupported version SketchUp's End of Support Policy Critical Limitations to Keep in Mind: Authorizing or