Kepware prefers that a license be transferred from a PC before it is repaired, but understands that this isn't always possible. The only option for a disk crash is to re-enter the KEPServerEX V4 license number when reinstalling the software. After doing so, users have 10 days to obtain a new unlock code. Kepware will request information as to why the product is being re-enabled. If the unlock code is not obtained within the 10-day limit, KEPServerEX V4 will revert to demo mode.