Increasing the password cache limit on the NDES server
Follow these steps to increase the password cache limit on the NDES server.
About this task
By default, the NDES server caches challenge passwords
when requested by the Device Administrator. The NDES server does not
give out new challenge passwords until the existing passwords are
used for certificate requests. The default setting on the NDES server
is five cached passwords. If you load the SCEP Admin URL five times
to test, and then request a challenge password the sixth time, the
NDES server displays the following error message:
Use the following procedure to configure NDES to cache more than five passwords.
Procedure
- Log on to the NDES server with administrative credentials.
- Open the registry editor by using .
- Go to HKEY_LOCAL_MACHINE\Software\Microsoft\Cryptography\MSCEP.
- Create a new key named PasswordMax.
- Under the PasswordMax key, create
a new DWORD key named PasswordMax and
increase the value.
- Restart IIS. For more information, see Restarting IIS on the NDES server.