1. COM registration is busted — re-register the DLL
This is the most common cause. When a program that uses COM (Component Object Model) hits this error, it's almost always because the DLL in question wasn't properly registered. This happens after a failed install, a bad update, or when you copy a DLL manually (don't ever do that, by the way).
The fix is stupid simple: re-register the DLL with regsvr32. Open an elevated Command Prompt — right-click Start, pick "Terminal (Admin)" or "Command Prompt (Admin)". Then type:
regsvr32 /u the_offending.dll
regsvr32 the_offending.dll
Replace the_offending.dll with whatever DLL the error message names. If the error doesn't name one, look in the event logs under Windows Logs > Application. You'll see the DLL path there.
If regsvr32 returns an error, that DLL might not be a COM server. Skip to cause #2.
2. Missing Visual C++ runtime — install the right one
You'd be surprised how often this trips people up. Many older apps depend on specific versions of the Visual C++ Redistributable. If the runtime DLL (like msvcr100.dll or msvcp120.dll) is missing or corrupted, you get 0x8002802F because the function table in the DLL is incomplete.
Don't bother with third-party "runtime pack" tools. Go straight to Microsoft's download page. Grab the Visual C++ Redistributable packages from 2005, 2008, 2010, 2012, 2013, and 2015-2022. Install both x86 and x64 versions. Yes, even if your system is 64-bit — many 32-bit apps need the x86 runtime.
After installing, reboot. If the error persists, check the app's documentation for specific runtime requirements. Some niche business apps require Visual Studio 2005 SP1 runtime, not the general one.
3. System file corruption — run SFC and DISM
When the first two fixes don't work, suspect corruption in a core system DLL. This usually shows up after a partial Windows update failure or a disk error. The error 0x8002802F can pop up when a system DLL like oleaut32.dll or ole32.dll has a bad function entry.
Run these commands in order, in an admin Command Prompt:
sfc /scannow
dism /online /cleanup-image /restorehealth
SFC scans and repairs protected system files. DISM fixes the component store that SFC relies on. Run SFC first, then DISM, then SFC again. Yes, twice. The second SFC pass catches files that DISM unharmed.
If SFC finds corrupt files it can't fix, check the CBS.log at C:\Windows\Logs\CBS\CBS.log for the specific file. You might need to replace it manually from a good copy (like from another machine on the same Windows version).
Quick-reference summary
| Cause | Fix | When it applies |
|---|---|---|
| COM registration broken | regsvr32 the DLL | Error names a DLL, happens after install/update |
| Missing VC++ runtime | Install all redistributables | Old software, error references msvc*.dll |
| System file corruption | SFC + DISM | No clear DLL name, WMI or automation tools fail |