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(mozilla-projects-nss-reference-fc-closeallsessions)=
# FC_CloseAllSessions
## Name
:::{container}
FC_CloseAllSessions - close all sessions between an application and a token.
:::
## Syntax
:::{container}
```{code}
CK_RV FC_CloseAllSessions(
CK_SLOT_ID slotID
);
```
:::
## Parameters
:::{container}
`slotID`
: [in] the ID of the token's slot.
:::
## Description
:::{container}
`FC_CloseAllSessions` closes all sessions between an application and the token in the slot with
the ID `slotID`.
The NSS cryptographic module currently doesn't call the surrender callback function `Notify`.
(See PKCS #11 v2.20 section 11.17.1.)
A user may call `FC_CloseAllSessions` without logging into the token (to assume the NSS User
role).
:::
## Return value
## Examples
## See also
:::{container}
- {ref}`mozilla-projects-nss-reference-fc-closesession`,
[NSC_CloseAllSessions](/en-US/NSC_CloseAllSessions)
:::