> For the complete documentation index, see [llms.txt](https://authenticator.hideez.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://authenticator.hideez.com/user-guide/android-guide/software-key-enrollment/pc-authorization-enrollment/enrollment-for-passwordless-pc-authorization/passwordless-account-re-enrollment.md).
# Passwordless account re-enrollment
Certificates are created in AD for passwordless login. The default validity period for this certificate is 1 year. When the validity period ends, Hideez Client will notify you. Then you will have to re-enroll the certificate for passwordless login for further use. The procedure is the same as enrollment:
1. Open previously installed [Hideez Client](https://update.hideez.com/update/hideezclient/clientsetup.exe).
2. Go to the Mobile Authenticator section and click the "Setup" button under the Passwordless Authenticator subsection.\
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3. Open the Scanner section at the Hideez Authenticator and scan the QR code from Hideez Client.\
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4. Confirm the re-enrollment in the Authenticator:\
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5. That is all set. Now the certificate validity period is reset and you are able to use Authenticator again.
{% hint style="info" %}
You can preventively re-enroll the certificate even if the validity period is not over yet.
{% endhint %}