TPM Base Services (TBS) Defaults in Windows 7
Enables access to the Trusted Platform Module (TPM), which provides hardware-based cryptographic services to system components and applications. If this service is stopped or disabled, applications will be unable to use keys protected by the TPM.
Default Settings
| Startup type: | Manual |
| Display name: | TPM Base Services |
| Service name: | TBS |
| Service type: | share |
| Error control: | normal |
| Object: | NT AUTHORITY\LocalService |
| Path: | %SystemRoot%\System32\svchost.exe -k LocalServiceAndNoImpersonation |
| File: | %SystemRoot%\System32\tbssvc.dll |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TBS |
| Privileges: |
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Default Behavior
TPM Base Services is a Win32 service. In Windows 7 it won't be started if the user doesn't start it. When the TPM Base Services is started, it is running as NT AUTHORITY\LocalService in a shared process of svchost.exe. Other system components, such as drivers and services, may run in the same process. If TPM Base Services fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the TBS service is not running because of the error.
Restore Default Startup Configuration of TPM Base Services
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config TBS start= demand
3. Close the command window and restart the computer.
The TBS service is using the tbssvc.dll file that is located in the C:\Windows\System32 directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.