# Registry # Registry Edit [REG ADD](onenote:#REG§ion-id=%7B10952E33-0230-45D7-BBCD-974A5BFA12A8%7D&page-id=%7B00E4D032-92BB-4708-BC8F-D8960C275F25%7D&object-id=%7B033D68FF-E9F8-0BB3-0A98-7B0D6E2A5E3B%7D&A9&base-path=http://acs-01-vsrv02/Accent/Tech%20Information/Generic%20Tech/Command%20Line.one) [REG DELETE](onenote:#REG§ion-id=%7B10952E33-0230-45D7-BBCD-974A5BFA12A8%7D&page-id=%7B00E4D032-92BB-4708-BC8F-D8960C275F25%7D&object-id=%7BB3116AFF-5829-0714-3A95-6F708863A3E3%7D&A&base-path=http://acs-01-vsrv02/Accent/Tech%20Information/Generic%20Tech/Command%20Line.one)
HKCR HKEY\_CLASSES\_ROOT
HKCU HKEY\_CURRENT\_USER
HKLM HKEY\_LOCAL\_MACHINE
HKU HKEY\_USERS
HKCC HKEY\_CURRENT\_CONFIG
Example of how to change your homepage: REG ADD "HKCU\\Software\\Microsoft\\Internet Explorer\\Main" /v "Start Page" /d [http://my.yahoo.com](http://my.yahoo.com/) /f Disable AutoPlay (XP) REG ADD "HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer" /v NoDriveTypeAutoRun /t REG\_DWORD /d 255 /f REG ADD "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LanguagePack" /v UniScribe /t REG\_DWORD /d 2 Meltdown registry REG ADD "HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\QualityCompat" /v cadca5fe-87d3-4b96-b7fb-a231484277cc /t REG\_DWORD /d 0x00000000 REG Operation \[Parameter List\] Operation \[ QUERY | ADD | DELETE | COPY | SAVE | LOAD | UNLOAD | RESTORE | COMPARE | EXPORT | IMPORT | FLAGS \] Return Code: (Except for REG COMPARE) 0 - Successful 1 - Failed For help on a specific operation type: REG ADD KeyName \[/v ValueName | /ve\] \[/t Type\] \[/s Separator\] \[/d Data\] \[/f\] KeyName \[[\\\\Machine\\\]FullKey](file://machine/%5DFullKey) Machine Name of remote machine - omitting defaults to the current machine. Only HKLM and HKU are available on remote machines. FullKey ROOTKEY\\SubKey ROOTKEY \[ HKLM | HKCU | HKCR | HKU | HKCC \] SubKey The full name of a registry key under the selected ROOTKEY. /v The value name, under the selected Key, to add. /ve adds an empty value name (Default) for the key. /t RegKey data types \[ REG\_SZ | REG\_MULTI\_SZ | REG\_EXPAND\_SZ | REG\_DWORD | REG\_QWORD | REG\_BINARY | REG\_NONE \] If omitted, REG\_SZ is assumed. /s Specify one character that you use as the separator in your data string for REG\_MULTI\_SZ. If omitted, use "\\0" as the separator. /d The data to assign to the registry ValueName being added. /f Force overwriting the existing registry entry without prompt. Examples: REG ADD [\\\\ABC\\HKLM\\Software\\MyCo](file://abc/HKLM/Software/MyCo) Adds a key HKLM\\Software\\MyCo on remote machine ABC REG ADD HKLM\\Software\\MyCo /v Data /t REG\_BINARY /d fe340ead Adds a value (name: Data, type: REG\_BINARY, data: fe340ead) REG ADD HKLM\\Software\\MyCo /v MRU /t REG\_MULTI\_SZ /d fax\\0mail Adds a value (name: MRU, type: REG\_MULTI\_SZ, data: fax\\0mail\\0\\0) REG ADD HKLM\\Software\\MyCo /v Path /t REG\_EXPAND\_SZ /d ^%systemroot^% Adds a value (name: Path, type: REG\_EXPAND\_SZ, data: %systemroot%) Notice: Use the caret symbol ( ^ ) inside the expand string REG DELETE KeyName \[/v ValueName | /ve | /va\] \[/f\] KeyName \[[\\\\Machine\\\]FullKey](file://machine/%5DFullKey) Machine Name of remote machine - omitting defaults to the current machine. Only HKLM and HKU are available on remote machines. FullKey ROOTKEY\\SubKey ROOTKEY \[ HKLM | HKCU | HKCR | HKU | HKCC \] SubKey The full name of a registry key under the selected ROOTKEY. ValueName The value name, under the selected Key, to delete. When omitted, all subkeys and values under the Key are deleted. /ve delete the value of empty value name (Default). /va delete all values under this key. /f Forces the deletion without prompt. Examples: REG DELETE HKLM\\Software\\MyCo\\MyApp\\Timeout Deletes the registry key Timeout and its all subkeys and values REG DELETE [\\\\ZODIAC\\HKLM\\Software\\MyCo](file://zodiac/HKLM/Software/MyCo) /v MTU Deletes the registry value MTU under MyCo on ZODIAC