dir /s C:\vb6tmpltlb* If missing, search your installation media or backup. Unlike a DLL, you cannot use regsvr32 on a .tlb file (that is for COM servers). Instead, use the regtlib tool (older Windows) or regtlibv12.exe (VB6 IDE tool).
One such artifact is the mysterious file vb6tmpltlb . If you have ever searched your C:\Windows\System32 folder, your Visual Basic installation directory, or a Windows SDK folder, you might have stumbled upon this TLB (Type Library) file. vb6tmpltlb
It is typically registered in the Windows Registry under: dir /s C:\vb6tmpltlb* If missing, search your installation