Reset the Epson B40W waste ink pad counter
The B40W can be reset in software. VNIT Reset Tool reads its counters for free over a USB cable, runs one free trial reset, and resets to 0% with a US$6 key.
Windows or Mac · reading the counter is free · one free trial per printer
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On Windows, install the B40W with Epson's driver, not Microsoft's. Download it from Epson's website for this 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.
How the B40W tells you
When its waste ink counter is full, the B40W stops printing. On the computer you will usually see “The printer's ink pads are at the end of their service life” or “Service Required”; on the printer itself, error lights or a message on its screen. Nothing is broken: a counter has reached its limit.
Use a USB cable for the B40W
Reading and resetting over Wi-Fi works on a few models only. Connect it with a USB cable. If the tool finds the printer on Wi-Fi but cannot read the counter, the tool is not broken: plug in the cable and press Check Printer again.
Reset the B40W on a Mac
The same app runs natively on macOS 11 or newer, on Intel Macs and Apple silicon (M1 and later), so you do not need Windows, Boot Camp or a virtual machine. Connect the B40W with a USB cable (MacBooks with only USB-C ports need an adapter). The first time, macOS asks you to confirm in System Settings → Privacy & Security → Open Anyway. Mac guide with screenshots · Which Epson reset tools run on a Mac.
Looking for the Epson B40W Adjustment Program?
The Epson Adjustment Program for the B40W is Epson's service software for repair technicians: one program per model, Windows only, with many functions besides the counter (EEPROM settings, head ID, alignment). Copies passed around online come from unknown sources and may be for the wrong model or region. If the B40W stops with the ink pad error, you only need its waste ink counter set back. VNIT Reset Tool does that one job, on Windows and Mac, and reading the counter is free. What the Adjustment Program is · How to spot an unsafe download.
How to reset the Epson B40W ink pad counter
- 01Download VNIT Reset Tool and unzip itWindows 7–11 or macOS 11+. Unzip it first: running it from inside the zip causes errors. Screenshots of every step: on Windows · on a Mac.
- 02Connect the B40W and press Check PrinterPlug in the USB cable. Wi-Fi works on a few models only, so use the cable. Switch the printer on. The tool shows the model, serial and each counter. The computer needs internet.
- 03Run the free trial, or enter your keyThe trial drops a 90%+ counter to 80%. A US$6 reset key takes it to 0%.
- 04Switch the printer off and on againSkip this and the printer still shows the old error.
After the reset: deal with the pads
The reset changes the counter, not the pads. If the B40W has printed a lot, wash or replace the pads, or fit an external waste ink tank, so ink cannot overflow. How.
B40W questions
Is this the Epson B40W Adjustment Program?
No. The Adjustment Program is Epson's Windows service software for technicians, one per model, with many service functions. VNIT Reset Tool only reads and resets the B40W's waste ink counters, on Windows and Mac, which is all the ink pad error needs.
The free trial worked. Do I still need a key?
Not straight away. The trial leaves the counter at 80%, so the error comes back sooner than after a full reset to 0% with a key.
Same reset family as the B40W
These models share the B40W's counters and reset the same way.