Hi I’m installing the unreal engine via Launcher and always the installation stop at 82% I disable the antivirus and other programs in the task manager, l try running the launcher as administrator and always the same, how i canfix this issue, the error code is IS-BV04
please, anybody that could help me with this issue, i don’t if this issue could be a hardware plroblem, y check the memories, and hard drive and everything is ok
Your log files will show which files are failing, if it’s the same ones you could try seek and destroy then run the install again. There’s a link to log in the settings cog menu ‘Show Logs’. Browse all of the lines containing ‘LogBuildPatchServices’, most will be just info but you’re looking for any errors.
If it is hardware (it is not definite!) then we generally see two kinds of issue that cause this, as you mentioned RAM or HDD.
Sometimes diagnostics can be rinse and repeat, and quite time consuming. TL;DR the best and easiest is to swap out individual hardware pieces to try to see if it will succeed with others, if you happen to have spares to hand, even if as temporary old hardware.
RAM:
Do to the nature of hash checks, sometimes a bit flip will occur during file data validation. This can often be diagnosed by the more advanced and rigorous memory tests in https://www.memtest86.com
If you are familiar with system building, sometimes you can also easily identify the RAM stick if it is causing issue by booting your machine with only one of them in at a time, assuming they are not too small individually.
Often if RAM is the issue, you may also see other installation errors in the log such as FC05, that and BV04 are both symptoms, though I would encourage testing with both methods above anyway.
HDD:
Sometimes it could be as simple as a bad sector. If you didn’t do one of the advanced tests that take a long time, try that. Otherwise, you could keep trying to see if you get there eventually.
The best diagnostic here of course is to try install to a different HDD (or USB drive), even if as a temporary test.
If that’s not possible, you could try rename your installation directory (i.e. UE_4.23 → UE_4.23_Bad) and then try the install again (it will start over) and since you didn’t delete the old files, it will encourage the use of different areas on the HDD.
Good luck, let us know how you get on!
Leigh
Hi, thanks for your help, i read the logs but it says that the installation was a success and no says nothing about any error, right know i 'm updating the windows 10 to the newer version 1903, i hope this will fix this issue and i could install the engine.
There will be several log files and some lines in them will be referring to different installation actions (the launcher itself installs dynamic content). You would need to find the ones relevant to your own UE installation attempt in order to try glean info from it.
If you would reproduce the issue, exit the launcher from the systray, then zip up all the log files and attach here I will take a look for you!
Let us know how you get on with the windows update though I am sceptical that it would solve I am afraid.
Hi, i’m attaching the log files, i do the windows update and i still with the same issue, also i do the visual studio component installation for unreal engine and nothing happens. thanks for your help, best regards,link text
Yup it would seem the installation fails on the same two files over and over. I was mistaken in thinking the logs would contain the filename. Certainly seems like a consistent enough issue that I would recommend trying the suggestions for identifying if your disk is at fault.
hi i do the HD file check again and everything looks good:
Checking file system on C: Volume label is Acer. Stage 1: Examining basic file system structure … 1388800 file records processed. File verification completed. 40920 large file records processed. 0 bad file records processed. Stage 2: Examining file name linkage … 75501 reparse records processed. 1740030 index entries processed. Index verification completed. 75501 reparse records processed. Stage 3: Examining security descriptors … Security descriptor verification completed. 175616 data files processed. CHKDSK is verifying Usn Journal… 36326672 USN bytes processed. Usn Journal verification completed. Windows has scanned the file system and found no problems. No further action is required. 975593471 KB total disk space. 415298236 KB in 1145036 files. 641524 KB in 175617 indexes. 1543719 KB in use by the system. 65536 KB occupied by the log file. 558109992 KB available on disk. 4096 bytes in each allocation unit. 243898367 total allocation units on disk. 139527498 allocation units available on disk. ---------------------------------------------------------------------- Stage 1: Examining basic file system structure … Stage 2: Examining file name linkage … Stage 3: Examining security descriptors …
0031150064171400A77624000000000038410000B5E500000000000000000000