Fix SEC_E_NO_CREDENTIALS (0x8009030E) – No Credentials Available

SEC_E_NO_CREDENTIALS (0x8009030E) means Windows can't find your login credentials for a network service. Usually tied to cached logon or Kerberos issues. Here's the practical fix.

Quick answer for the impatient

If you're seeing 0x8009030E, run klist purge in an admin command prompt, then restart the app or service that failed. That clears the broken Kerberos ticket cache more often than not.

What's actually going on

This error pops up when Windows tries to authenticate to a network resource—a file share, a remote desktop session, a SQL server—and the security package (usually Kerberos or NTLM) comes up empty. No credentials in the bag, so to speak.

I've seen this on a client's server after they changed a domain user's password but didn't log off that machine. The cached tickets were stale, and every mapped drive threw this error. Another classic: a laptop that was offline for days, then you try to access a share while it's still logged in with old credentials.

Under the hood, it's often a Kerberos ticket that expired or got invalidated. But sometimes it's simpler—Windows just can't retrieve the stored credentials because the Credential Manager service hiccuped, or the user profile got corrupted. RDP is a common trigger too, especially when you try to connect to a machine that's not in the same domain or when smart card auth is misconfigured.

The fix that works most of the time

Clear the Kerberos ticket cache. Open an elevated command prompt (right-click Command Prompt, run as administrator). Type:

klist purge

This wipes all cached tickets. Then try your connection again. If it works, you're done.

If that didn't do it, check if the target machine is reachable. I've had cases where the client's DNS pointed to an old IP. Run:

ping yourserver.yourdomain.com

And also check that you can resolve the name properly: nslookup yourserver.yourdomain.com. If the IP is wrong, flush DNS with ipconfig /flushdns and update the hosts file if needed.

Re-enter your credentials. Go to Control Panel > Credential Manager > Windows Credentials. Look for any entries related to the resource you're trying to access. Delete them, then reconnect and re-authenticate. This is especially useful for mapped drives or RDP.

Check the time. Kerberos is picky about time skew. If your system clock is off by more than 5 minutes, you'll get auth failures. Right-click the clock, choose Adjust date/time, and sync manually or turn on automatic sync.

For RDP specifically, try NTLM fallback. If you're connecting to a workgroup machine, sometimes forcing NTLM helps. In the RDP file, set:

authentication level:i:0

or run mstsc /admin to avoid credential delegation issues.

If the main fix fails — dig deeper

Sometimes the issue is the Credential Manager service itself. I once spent an hour on a call where the service had stopped after a Windows update messed with its dependencies. Check it:

Open Services (Win+R, type services.msc).
Find Credential Manager. If it's not running, right-click and Start it. Set it to Automatic if it isn't.
Restart the service if it's running—sometimes it gets stuck.

Another thing to try: run gpupdate /force if you're on a domain. Group Policy changes can affect Kerberos settings, and forcing an update can push fresh ones.

If you're using a smart card, forget it—the error often means the smart card driver is messed up. Update the driver or reinstall the middleware (like ActivClient or Gemalto).

Prevention for next time

The biggest culprit I see is stale sessions. Get in the habit of locking your machine or logging off when you change your password. Also, if you map drives, use the full UNC path with the FQDN, not just the server name—it forces proper DNS resolution and avoids Kerberos misidentification.

For RDP, avoid using saved credentials from the old password. Always type them fresh after a password change. And if you're in a domain, set up a scheduled task to run klist purge once a week on servers that handle sensitive shares. It sounds overkill, but it stops 90% of these errors.

Finally, keep your system time synced with a reliable NTP server. Windows does this by default, but if your machine is on a VLAN that blocks NTP, you'll see weird auth failures. That's exactly what happened to a small law firm I consult for—their router was filtering UDP port 123, and every Monday morning, half the team couldn't access the file server until they synced clocks manually.

That's the long and short of it. Try the purge first, then the credential manager route. If you're still stuck, check the event logs under Windows Logs > Security for the specific error, but that's a rabbit hole for another day.