How to change PIN1, PIN2 and PUK codes using DigiDoc4 client?

To change PIN1, PIN2 and PUK codes, follow these instructions:

  • Open DigiDoc4 client
  • Insert ID-card to the card reader and open section "My eID"
  • Wait until your ID-card has been recognized

Although the process of changing PIN1, PIN2 and PUK codes is essentially the same, you should still remember few rules: 

Permitted code lengths are different:

  • PIN1 code must be within 4–12 digits
  • PIN2 code must be within 5–12 digits
  • PUK must be within 8 – 12 digits

The new code must be different from the old code, only include numbers and must not partially or fully match your personal code.

To change PIN1/Authentication certificate choose "CHANGE PIN1"

If the code has been changed successfully, the relevant message will be displayed

To change PIN2/Signing certificate choose "CHANGE PIN2"

If the code has been changed successfully, the relevant message will be displayed

To change PUK code choose "CHANGE PUK"

If the code has been changed successfully, the relevant message will be displayed

NB! You can also change PIN codes if you have forgotten your old PIN codes. In this case, you can use PUK code to change PIN codes

  • Launch DigiDoc4 client
  • Insert ID-card to the card reader and open section "My eID"
  • Wait until your ID-card has been recognized
  • Choose "Forgot PIN1?" or "Forgot PIN2?"

Insert PUK code and the new PIN1 or PIN2 twice

The PIN code will be changed and you will see a confirmation of the code change.


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