Find out why error 0x8004005 or 0x800C0005 pops up when searching for Windows updates.

According to Microsoft, failure 0x8004005 or 0x800C0005 most often occurs due to dynamic Link Libraries (or DLL) not registered properly. There may also be a problem with the firewall or antivirus blocking the SSL connection.

There are 3 possible ways to eliminate the failure:

1. Launching the search. We enter the “cmd” query into it. Right-click and select “Open as an administrator". We enter the following commands into the line:

regsvr32 Softpub.dll

; regsvr32 Wintrust.dll

   regsvr32 Initpki.dll

At the end, click “Ok” and restart PC.

2.Temporarily deactivate the antivirus.

3. Temporarily disabling the firewall.

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