A vendor outage has halted vehicle inspections in Massachusetts for the last day or more — the final days before stickers expire for many drivers, leaving them unable to renew their right to be on the road.

The Massachusetts Registry of Motor Vehicles said a nationwide outage isn't the fault of dealers and mechanics but of Applus Technologies of Wisconsin, the technology company it pays almost $5 million a year to keep the system working.

The RMV said it's in communication with law enforcement to use discretion with expired stickers in the meantime and is urging Applus to provide a timeline for when inspections will come back online.

This is a developing story.