Challenge
Veeam ONE installation fails with "Couldn't create crypto provider" message.
Cause
One of the known issues with Microsoft update 3000850 as per this MS KB article is the following: Opening Credential Manager fails with error 0x80090345", that also affects creating the crypto provider.
Solution
Follow these steps:
1. On the Veeam ONE Server: Click Start > Run, type regedit, and then click OK.
2. Navigate to the following path: HKEY_LOCAL_MACHINE\Software\Microsoft\Cryptography\Protect\Providers\df9d8cd0-1501-11d1-8c7a-00c04fc297eb.
3. Create a new DWORD (32-bit value) and name it ProtectionPolicy.
4. Set the value to 1 and save the changes.
5. Restart the computer.
If the above-mentioned solution does not help, please follow the next Microsoft article.