Credential Manager Error (0x800706BA - The RPC server is unavailable)

[monk]

When I use the credential manager in Win 8.1 Home 64x with an admin account, I receive the following error:

"Credential Manager Error"

"An error occurred while performing this action."

"Error code: 0x800706BA
Error message: The RPC server is unavailable."

I've tried the following but none of them fixed the problem:

Checked to see if DCOM Server Process Launcher, Remote Procedure Call (RPC), and the RPC Endpoint Mapper services are running and set at automatic (they are);

Used regedit to see if the start variable for these services are set at 2 (they are);

Checked firewall to see if Remote Assistance is allowed (it is);

Checked to see that file and print sharing and IPV4 and IPV6 are enabled in the network adapter properties (they are);

Reset Internet Explorer;

Disabled firewall;

Uninstalled the antivirus (Kaspersky Security Cloud free);

sfc /scannow (no problems);

chkdsk /r (some orphan files, but no problems in subsequent scans);

Went to safe mode;

Logged into another account;

Did a clean boot;

Did a system restore using a point at 11/10 (the earliest available);

Used a full backup from 11/5 (the earliest available);

Ran Windows Repair;

Ran Glarysoft Registry Repair;

Ran ADWCleaner (some PUPs);

Kaspersky, Malwarebytes, and Zemana scan (some PUPs);

The only thing that fixed the problem was a Windows refresh, but many customizations (such as grey backgrounds for some apps) and software were removed, so I have to reinstall and reconfigure them.

For now, I restored the whole system, with the problem still taking place.

If there is a way for me to fix this problem without having to do a refresh, I'd appreciate it.

 

[monk]

I was able to avoid a refresh by doing a repair install (i.e., I inserted the Win 8.1 DVD, ran setup.exe, and choose to upgrade while retaining all settings, applications, etc.).

 

[Sysnative Windows Update]

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