Thanks, Markus. That list gave me some more information.
The following is a list of the exit codes that was returned between 100 and 10000 times in our environment and that I still haven't found some sort of description for.
| Message | Decimal | Hex |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (1) | 1 | 1 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (2) | 2 | 2 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (8) | 8 | 8 |
| Error: "C:\windows\system32\wusa.exe" returned failure exit code (23) | 23 | 17 |
| Error: "C:\windows\system32\wusa.exe" returned failure exit code (112) | 112 | 70 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (1117) | 117 | 75 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (776) | 776 | 308 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (1016) | 1016 | 3F8 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (1058) | 1058 | 422 |
| Error: "C:\windows\system32\wusa.exe" returned failure exit code (1084) | 1084 | 43C |
| Error: "C:\windows\system32\wusa.exe" returned failure exit code (1115) | 1115 | 45B |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (1168) | 1168 | 490 |
| Error: "C:\windows\system32\wusa.exe" returned failure exit code (1332) | 1332 | 534 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (1392) | 1392 | 570 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (1603) | 1603 | 643 |
| Error: "C:\windows\system32\wusa.exe" returned failure exit code (1618) | 1618 | 652 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (1783) | 1783 | 6F7 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (3017) | 3017 | BC9 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (6801) | 6801 | 1A91 |
| Error: "C:\windows\system32\wusa.exe" returned failure exit code (14003) | 14003 | 36B3 |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (14098) | 14098 | 3712 |
| Error: "C:\windows\system32\wusa.exe" returned failure exit code (14107) | 14107 | 371B |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (14108) | 14108 | 371C |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (2148468749) | 2148468749 | 800F080D |
| Error: "C:\Windows\system32\wusa.exe" returned failure exit code (2148468992) | 2148468992 | 800F0900 |
