IIS ADMIN could not be started error code 2146893818 solution

The main reason for the error is that 'C:\Documents and Settings\All Data\Microsoft\Crypto\RSA\MachineKeys' folder keys is broken, just change the name 1.
This folder is hidden by default, you can enter this path directly on my computer.
There are at least two files in the folder, as follows:
c23***********************_MachineGUID
7a4***********************_MachineGUID

When this IIS error occurs, you may see an odd number of 3 or 5 or 7 files; It's supposed to be complex 2,4,6; So that's the problem.

Solutions:
1. Find the MachineGUID from "regedit" in the registry, and the registry path is HKEYLOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\MachineGUID

2. Make a backup copy of all keys under "C:\Documents and Settings\All Users\Application Microsoft\ Microsoft\ RSA\MachineKeys' in case of emergency.

3. Then, in pairs, replace "MachineGUID" in "c23****_MachineGUID" and "MachineGUID" in "7a4***** _MachineGUID" with the key value obtained in the registry.

4. Then try to start IISAdmin in the service and you will see that it can be started. Congratulations, the revision was successful.

5. In the last step, after starting IISAdmin, please use the command "iisreset" to reset 1, otherwise the website will not start, and "iisreset" will not delete any of your websites.