Seeing an error message about CRK communication? Do not panic. Restart both the cash register and the internet router. Remember, you do not have to stop selling to customers – the law allows continued recording. If a restart does not help, check the cables or coverage, and as a last resort, contact an authorized service center immediately.
Why must you react immediately to a repository error?
The VAT Act (Art. 111a(3)) imposes a clear obligation on you: your cash register must continuously, directly, and automatically transmit data on transactions and system events to the Central Repository of Cash Registers (CRK). An error means the cash register has lost connection with the Ministry of Finance servers and is not sending the required information. As your business partner, we advise: never ignore this warning to avoid legal trouble.
How to restore the connection yourself in 3 steps?
Before calling technical support, you should perform basic diagnostics. Most problems in 2026 are not on the device's side at all, but with your internet.
Follow these steps:
Check the physical connection: Make sure the Wi-Fi router is working properly, the LAN (Ethernet) cable is not damaged, and if you use a SIM card in the register – check if you have cellular network coverage.
Perform a hard reset of devices: Turn the cash register off and on again. Unplug the router from power for at least 30 seconds, then plug it back in and wait a few minutes.
Force communication manually: Enter the cash register menu (most often the path: Service > Repository > Check connection) or try to issue a test receipt – this often "wakes up" a dormant communication module.
Sales during an outage vs. tax penalties
You should know that under the law (Art. 111(3ab) of the VAT Act), an internet outage beyond your control does not force you to close the store – continue selling. The device will send overdue receipts automatically as soon as it regains coverage. The exception is a permanent lack of coverage at your location – in that case, you must submit an application to the head of the tax office to transmit data at specified intervals (in accordance with the template in § 22 of the Regulation of the Minister of Finance of June 25, 2025).
What risks do you face if you completely ignore a broken connection?
Financial penalties: The tax office may impose a penalty of 300 zł for lack of communication (Art. 111(6ka) of the VAT Act).
Immediate inspection: The lack of incoming data immediately draws the attention of tax authorities, which may result in a visit from inspectors.
Outdated software: A device without a connection will not download important updates from CRK, which will quickly lead to system errors.
When to call Fiskasy.pl support?
If you have completed all the steps above and the message continues to block the proper functioning of the device (or appears cyclically), you need to leave the equipment in the hands of professionals. This is a sign that the register's communication module (Wi-Fi, LAN, or GSM) has suffered a technical failure or your business network requires professional configuration.
You can find more information on this topic in the comprehensive article by ESC SA: What does the repository communication error message on a cash register mean?.
Do not waste time fighting glitches.
Contact the certified Fiskasy.pl service center right now, and we will get your device back on its feet quickly, ensuring your business stays safe!
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