Hello, 

I use Windows 8.1  

I am having problems updating Windows.  I ran a diagnostics which included the following:

2015-03-26 22:47:13, Info                  CSI    00000901 [SR] Cannot repair member file [l:36{18}]"Amd64\CNBJ2530.DPB" of prncacla.inf, Version = 6.3.9600.17415, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type = [l:24{12}]"driverUpdate", TypeName neutral, PublicKey neutral in the store, hash mismatch
2015-03-26 22:47:14, Info                  CSI    00000902 Hashes for file member \SystemRoot\WinSxS\amd64_prncacla.inf_31bf3856ad364e35_6.3.9600.17415_none_95dd5540d57f8c01\Amd64\CNBJ2530.DPB do not match actual file [l:36{18}]"Amd64\CNBJ2530.DPB" :
  Found: {l:32 b:+2Ud2M9r29FcAi+AANFg3EgkevECbVMUSw1nNsZXFEg=} Expected: {l:32 b:n520k714Uu3utHa5JGQ6HQYbZphKhlMWq5pEmfnCDuw=}
2015-03-26 22:47:14, Info                  CSI    00000903 [SR] Cannot repair member file [l:36{18}]"Amd64\CNBJ2530.DPB" of prncacla.inf, Version = 6.3.9600.17415, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type = [l:24{12}]"driverUpdate", TypeName neutral, PublicKey neutral in the store, hash mismatch
2015-03-26 22:47:14, Info                  CSI    00000904 [SR] This component was referenced by [l:166{83}]"Package_2709_for_KB3000850~31bf3856ad364e35~amd64~~6.3.1.8.3000850-6825_neutral_GDR"
2015-03-26 22:47:14, Info                  CSI    00000905 [SR] Repair complete
2015-03-26 22:47:14, Info                  CSI    00000906 [SR] Committing transaction
2015-03-26 22:47:14, Info                  CSI    00000907 Creating NT transaction (seq 2), objectname [6]"(null)"
2015-03-26 22:47:14, Info                  CSI    00000908 Created NT transaction (seq 2) result 0x00000000, handle @0x848
2015-03-26 22:47:14, Info                  CSI    00000909@2015/3/26:11:47:14.711 Beginning NT transaction commit...
2015-03-26 22:47:14, Info                  CSI    0000090a@2015/3/26:11:47:14.946 CSI perf trace:
CSIPERF:TXCOMMIT;309967
2015-03-26 22:47:14, Info                  CSI    0000090b [SR] Verify and Repair Transaction completed. All files and registry keys listed in this transaction  have been successfully repaired

Can you please advise how to fix the corrupted file?  

Can you try to delete this folder : %systemroot%\softwareDistribution

Stop the service Windows Update before delete the folder (net stop windows update) 

Hi miss_hell9,
Would you please share us more details with the issue ?What is the exact symptom of the issue ?
"I am having problems updating Windows"
Will all the updates suffer the issue ?Have you got any error messages ?
 It seems that there is something wrong with the windows update.
"I ran a diagnostics "
Do you mean the "dism /online /cleanup-image /restorehealth","sfc /scannow"or somethig else ?
Please take the following step to have a troubleshoot  ,if there is any antivirus software installed ,please turn them off temporarily to have a check:
 1.Run the built-in troubleshoot tool to have  a diagnostic :
 Control Panel\All Control Panel Items\Troubleshooting\All Categories\Windows Update.

2.Clear the windows update cache as Nicolas suggested.
 net stop wuauserv
  cd %systemroot%\SoftwareDistribution
  ren Download Download.old
  net start wuauserv
  Restart the machine and manually check for updates again

3.Try the fixit tool to reset Windows update Components as S.Sengupta suggested .
 How do I reset Windows Update components?
https://support.microsoft.com/en-us/kb/971058

If the issue persists ,please check the Event Viewer (Event Viewer \Windows Logs \Application ,System ,Setup )and the "Windowsupdate.log" (Search it directly) for more information to troubleshoot this issue .If you have troubles in analyzing this issue ,we can upload them to the OneDrive and paste the link here

Best r

I hope every one knows that even a pirated OS owner can upgrade his OS to Windows 10.
If there is any problem then Windows system restore can revert back you on your old last good OS condition.

If you want to know better on this, you can go through my blog.

http://techyuga.com/blogs/

If you want, you may go for Windows 10 but if face any problem get back to your own old OS.