> 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.\ \ ![](https://3587013120-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6LNXC3aPYBuLbSginKPS%2Fuploads%2FrFiSV8seTvrO4HaoECuj%2Fimage.png?alt=media\&token=4cccc27c-a866-4a10-8398-6ccd1f390458)
3. Open the Scanner section at the Hideez Authenticator and scan the QR code from Hideez Client.\ \ ![](https://3587013120-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6LNXC3aPYBuLbSginKPS%2Fuploads%2FVVrUjfXoMoAKPd9ZzXRR%2Fimage.png?alt=media\&token=e8eba05b-81dc-47c9-8218-8122f60e9108)
4. Confirm the re-enrollment in the Authenticator:\ \ ![](https://3587013120-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6LNXC3aPYBuLbSginKPS%2Fuploads%2FiwyegCfgHU4JeclI6vw8%2Fimage.png?alt=media\&token=864b9c1b-66ed-410b-b7bc-71ab49f4df84)
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 %}