My Username, Password, or License Key is not working

Don't know your Username, Password, or License Key?

Visit our Lost License page where you can request to have your Username, Password, and License Key emailed to you. If you do know your Username, Password, and License Key, follow the instructions in the checklist below.

Complete the items on the checklist below to troubleshoot this issue:

Use only the Username/Password/License Key generated for you and sent to the email address you provided while registering/purchasing a license. For example:

  • Username: EAV-12345678
  • Password: abcde12345

Copy and paste your Username and Password, or License Key (depending on product version) into the activation screen and be sure not to select an extra blank space

If you cannot copy and paste, type your Username and Password, or License Key, EXACTLY as they are written:

  • The Username and Password are case sensitive
  • The hyphens in the Username and License Key are necessary
  • The Password is ten characters long
  • The License Key is sixteen characters long
  • The Password uses all lowercase characters
  • The letter L is not used in passwords (use the number one (1) )
  • A big '0' is the number zero (0), a little 'o' is the lowercase letter o

If your Username and Password, or License Key still do not work:

Clear the update cache in ESET Smart Security or ESET NOD32 Antivirus. Click to view instructions.

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