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Certificate Manager Tool (Certmgr.exe)

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The Certificate Manager tool manages certificates, certificate trust lists (CTLs), and certificate revocation lists (CRLs).

certmgr [/add | /del | /put] [options]
[/s[/r registryLocation]] [sourceStorename]
[/s[/r registryLocation]] [destinationStorename]
Argument Description
sourceStorename The input certificate store as the type StoreFile, or the type system store.
destinationStorename The output certificate store or file.
Option Description
/add Adds certificates, CTLs, and CRLs to a certificate store.
/all Adds all entries when used with /add. Deletes all entries when used with /del. Displays all entries when used without the /add or /delete options. The /all option cannot be used with /put.
/c Adds certificates when used with /add. Deletes certificates when used with /del. Saves certificates when used with /put. Displays certificates when used without the /add, /delete, or /put options.
/CRL Adds or deletes CRLs. Displays CRLs when used without the /add, /delete, or /put options.
/CTL Adds or deletes CTLs. Displays CTLs when used without the /add, /delete, or /put options.
/delete Deletes certificates, CTLs, and CRLs from a specified certificate store.
/e encodingType Specifies the certificate encoding type.
/f dwFlags Specifies the store open flag. This is the dwFlags parameter passed to CertOpenStore. The default value is CERT_SYSTEM_STORE_CURRENT_USER. This option is considered only if the /y option is used.
/h[elp] Displays command syntax and options for the tool.
/n commonName String Specifies the common name of the certificate to add, delete, or save. This option can only be used with certificates; it cannot be used with CTLs or CRLs.
/put Saves an X.509 certificate, CTL, or CRL from a certificate store to a file. The file will be saved in X.509 format. The /7 option can be used with the /put option to save the file in PKCS #7 format. The /put option must be followed by either /c, /CTL, or /CRL. The /all option cannot be used with /put.
/r registry location Identifies the registry location of the system store. This option is considered only if you specify the /s option. Registry location must be one of the following:
  • currentUser indicates that the certificate store is under the HKEY_CURRENT_USER key. This is the default
  • localMachine indicates that the certificate store is under the HKEY_LOCAL_MACHINE key.
/s Indicates that the certificate store is a system store. If you do not specify this option, the store is a StoreFile.
/sha1 sha1Hash Specifies the SHA1 hash of the certificate, CTL, or CRL to add, delete, or save.
/v Specifies verbose mode; displays detailed information about certificates, CTLs, and CRLs. This option cannot be used with the /add, /delete, or /put options.
/y storeProviderType Specifies the store provider type.
/7 Saves the destination store as a PKCS#7 object.
/? Displays command syntax and options for the tool.

Remarks

Certmgr.exe performs the following basic functions:

  • Displays certificates, CTLs, and CRLs to the console.
  • Adds certificates, CTLs, and CRLs to a certificate store.
  • Deletes certificates, CTLs, and CRLs from a certificate store.
  • Saves an X.509 certificate, CTL, or CRL from a certificate store to a file.

Certmgr.exe works with two types of certificate stores: StoreFile and system store. It is not necessary to specify the type of certificate store; Certmgr.exe can identify the store type and perform the appropriate operations.

Running Certmgr.exe without specifying any options launches a GUI that helps with the certificate management tasks that are also available from the command line. The GUI provides an import wizard, which copies certificates, CTLs, and CRLs from your disk to a certificate store.

For more information about certificates, see the About CryptoAPI section of the Microsoft Platform SDK documentation.

Examples

The following command displays a default system store called my with verbose output.

certmgr /v /s my

The following command adds all the certificates in a file called myFile.ext to a new file called newFile.ext.

certmgr /add /all /c myFile.ext newFile.ext

The following command moves a certificate with the common name myCert in the my system store to a file called newCert.cer.

certmgr /add /c /n myCert /s my newCert.cer

The following command deletes all CTLs in the my system store and saves the resulting store to a file called newStore.str.

certmgr /del /all /ctl /s my newStore.str

The following command puts a certificate in the my system store in the file newFile. You will be prompted to enter the certificate number from my to put in newFile.

certmgr /put /c /s my newFile

See Also

.NET Framework Tools | Certificate Creation Tool (Makecert.exe)