Fix ERROR_INVALID_SERVICENAME (0x000004bd) in Windows Services

What's This Error

You see ERROR_INVALID_SERVICENAME (0x000004BD) when you try to start, stop, or query a service using net start, sc, or Services.msc. It means Windows literally can't find a service matching what you typed. Happens most often when you copy a command from a blog post and the service name has a hidden space or a typo.

30-Second Fix: Double-Check the Service Name

This is the culprit 90% of the time. The service name in Windows isn't the same as the display name.

1. Open Services.msc (press Win + R, type services.msc, hit Enter).
2. Find your service in the list. Look at the first column – that's the service name, not the display name (which is the friendly label).
3. Right-click the service > Properties. The Service name field at the top is what you need.

If you're using the command line, the syntax is:

net start "ServiceName"
sc start "ServiceName"

Notice the quotes? If the name has spaces, quotes are mandatory. Without them, Windows sees SQL Server as two separate words and throws 0x000004BD.

Real-world scenario: You copy net start MSSQLSERVER but the actual service name is MSSQL$SQLEXPRESS. That dollar sign matters. Check the exact name.

5-Minute Fix: Use sc Query to List All Services

If you can't find the service in the GUI, or you're on a headless server, sc query is your friend.

1. Open Command Prompt as admin.
2. Run sc query | find "SERVICE_NAME" to dump every service name.
3. Scan the list for the one you need. Note the exact spelling.

Pro tip: pipe to findstr if you already know a keyword. Example: sc query | findstr /i "sql" shows only services with 'sql' in the name.

If you see the service but it's blank or garbled, skip to the advanced fix.

15-Minute Fix: Repair a Corrupt Service Entry in Registry

This error also appears if a service entry in the registry is corrupted. That happens after a failed uninstall, malware cleanup, or a botched Windows update. Don't bother with System Restore – it rarely helps here.

1. Back up the registry first. File > Export, save the whole thing.
2. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services.
3. Find the key matching your service name. Check these values:

• ImagePath – should point to a real executable. If it's blank or points to a deleted file, that's your problem.
• DisplayName – if this value is missing or contains weird characters, Windows can't parse it.
• ObjectName – Usually LocalSystem or NT AUTHORITY\NetworkService. If it's empty, services won't start.

Fix the broken value by comparing with a working service (like LanmanServer). If the ImagePath is wrong, update it to the correct EXE path. Common examples:

C:\Windows\System32\svchost.exe -k netsvcs
C:\Program Files\SomeApp\service.exe

After fixing, restart the service from an admin command prompt:

sc start "YourServiceName"

Still failing? The service might be completely orphaned. In that case, delete the registry key (after backing up!) and reinstall the software. Deleting a service key from the registry is safe as long as you know what you're doing – just don't touch anything else.

Last Resort: Check for Hidden Characters

I've seen this error from a trailing space in the service name inside a script. If you're working with PowerShell or a batch file, dump the variable to a file and examine it in a hex editor. A 0xA0 non-breaking space will look like a normal space but break everything. Replace it with a regular space.

$serviceName = "MSSQL$SQLEXPRESS"
[System.Text.Encoding]::ASCII.GetBytes($serviceName)

If the byte array shows 160 where a space should be, you've found it.

Quick Recap

• Check the exact service name in Services.msc – don't guess.
• Use quotes around names with spaces.
• Run sc query to get the real service name.
• Repair corrupt registry entries under Services key.
• Kill hidden spaces in scripts.