Error: "Package checksum verification failed" when Installing Intel® Software Guard Extensions (Intel® SGX) SDK for Windows*

Attempted to install Intel® Software Guard Extensions (Intel® SGX) SDK for Windows* by double-clicking intel_sgx_windows_sdk_2.11.100.3.exe

Error popped up: Package checksum verification failed

The package checksum verification error usually occurs when you are missing the Quovadis Root CA Certificate.

Follow these steps to install the QuoVadis Root CA Certificate:

1. Go to QuoVadis Root CA Certificate and follow the instructions on that page to save the certificate to a local file.
2. Name the file with a .crt extension, such as quovadisrootcert.crt.
3. Double-click the file quovadisrootcert.crt.
4. Click Install Certificate…
5. Select Local Machine | Next.
6. Select Yes to run the dll.
7. Select Automatically select the certificate store | Next | Finish.
8. Install the Intel® Software Guard Extensions (Intel® SGX) SDK for Windows*.

If this does not work, clear the Intel SGX SDK installer cache:
Delete the directory C:\ProgramData\Intel\Installer\SGX_SDK\cache.