On Windows, install your printer with Epson's driver, not Microsoft's. Download it from Epson's website for your model. If Windows set the printer up by itself with a Microsoft driver (Windows Ready Print or Microsoft IPP Class Driver), it may still print, but the tool often can't read or reset it over USB. How to get the Epson driver back.
The printer still shows the error after a reset
Switch the printer off, wait a few seconds, and switch it on again. The printer only reads the new counter when it starts up. This is the most common reason people think a reset did not work.
After the restart, press Check Printer again. The counter should read 0%, or 80% after a free trial.

The tool cannot find, read or reset the printer
Every message the tool can show, from “Printer not found” and “Communication Error” to Windows 11 driver problems and Wi-Fi locks, is explained with its fix in one place: VNIT Reset Tool cannot find, read or reset the printer.
“Written, but the read-back does not match”
The new value may not have taken yet. Do not press Reset again right away. Turn the printer off with its power button, wait until all lights are off, turn it back on and wait until it is quiet (1 to 2 minutes), then press Check Printer. Still high? Press Chat with support in the tool.
The trial button says the counter is not full enough
The trial only runs at 90% or above, so your one trial is not wasted. At a lower level you do not need a reset yet.
The trial button says it has been used
Each printer gets one trial, counted on our server. A full reset needs a key.
Nothing happens when I press a button
Read the log panel at the bottom of the tool. It records every action and the reason when something fails. If the tool closes by itself, send us the file loi.txt from the tool’s folder.
Sources
- VNIT Reset Tool user guide, section 10 (troubleshooting)
- VNIT Reset Tool release notes, version 3.12.2