BTC how to export private key

1. Just the wallet.dat file. For fear of theft, back up this file to other places, and then delete it. Never back up first

2. You need to create a new wallet before importing it.

3. if(!CryptExportKey(hKey, NULL, PRIVATEKEYBLOB, NULL, NULL, &dwBlobLen_pv)) { cout

4. Ah??? There can't be none. Is there something wrong with your system?

5. Can the certificate be deleted and reloaded? No
can the certificate no longer be used after deletion? If you can't export it, you can't! No more backup
I want to go to the bank to sign again
I just met this thing some time ago!

6. It is recommended to call 95599 for online guidance
to avoid operation error and void the two codes

7. In general, this kind of situation is only encountered when the certificate of online banking is used

is to ask if you want to export the private key, then you can back it up. For example, when installing the online banking certificate of CCB, you can choose whether it can be exported or not

export in ie, check in tools, Internet Options, content, certificate and view to see if there is a private key. If not, your certificate cannot export the private key, and your certificate cannot be exported.