To answer your questions...
Drive I: is a normal hard drive. Drive X: used for Temp is a ram disk.
Virus scanner is normal Windows Defender, which I disabled completely prior to running all tests below.
I ran a test using drive C: for Temp and DL.
I ran an additional test turning off Direct Unpack.
Same result Error renaming "I:\DL\_UNPACK_test_download_1000MB" to "I:\DL\test_download_1000MB" for all tests.
Here are the hopefully useful chunks of the +Debug Log, It was 100k lines so I deleted some beginning and ending chunks:
2023-03-08 10:35:23,966::INFO::[newsunpack:555] Set sometestfile-1GB completed by DirectUnpack
2023-03-08 10:35:23,966::DEBUG::[newsunpack:578] rar_unpack(): Rars: ['\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part01.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part02.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part03.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part04.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part05.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part06.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part07.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part08.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part09.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part10.rar', '\\\\?\\X:\\test_download_1000MB\\sometestfile-1GB.part11.rar']
2023-03-08 10:35:23,966::DEBUG::[newsunpack:579] rar_unpack(): Newfiles: ['\\\\?\\I:\\DL\\_UNPACK_test_download_1000MB\\1GB-explanation.txt', '\\\\?\\I:\\DL\\_UNPACK_test_download_1000MB\\1GB.bin']
2023-03-08 10:35:23,966::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part01.rar
2023-03-08 10:35:23,975::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part02.rar
2023-03-08 10:35:23,985::DEBUG::[interface:141] Request GET /api from 127.0.0.1 [Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0] {'mode': 'queue', 'start': '0', 'limit': '250', 'output': 'json', 'apikey':<APIKEY>', '_': '1678300455941'}
2023-03-08 10:35:23,986::DEBUG::[interface:141] Request GET /api from 127.0.0.1 [Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0] {'mode': 'history', 'failed_only': '0', 'start': '0', 'limit': '250', 'last_history_update': '14', 'output': 'json', 'apikey':<APIKEY>', '_': '1678300455942'}
2023-03-08 10:35:23,986::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part03.rar
2023-03-08 10:35:23,998::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part04.rar
2023-03-08 10:35:24,009::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part05.rar
2023-03-08 10:35:24,019::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part06.rar
2023-03-08 10:35:24,029::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part07.rar
2023-03-08 10:35:24,039::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part08.rar
2023-03-08 10:35:24,050::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part09.rar
2023-03-08 10:35:24,060::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part10.rar
2023-03-08 10:35:24,070::DEBUG::[filesystem:911] [sabnzbd\newsunpack.py.rar_unpack] Deleting file \\?\X:\test_download_1000MB\sometestfile-1GB.part11.rar
2023-03-08 10:35:24,071::INFO::[newsunpack:298] Unrar finished on \\?\X:\test_download_1000MB
2023-03-08 10:35:24,071::DEBUG::[filesystem:504] build_filelists(): joinables: []
2023-03-08 10:35:24,071::DEBUG::[filesystem:505] build_filelists(): zips: []
2023-03-08 10:35:24,071::DEBUG::[filesystem:506] build_filelists(): rars: []
2023-03-08 10:35:24,072::DEBUG::[filesystem:507] build_filelists(): 7zips: []
2023-03-08 10:35:24,072::DEBUG::[filesystem:508] build_filelists(): ts: []
2023-03-08 10:35:24,073::DEBUG::[filesystem:504] build_filelists(): joinables: []
2023-03-08 10:35:24,073::DEBUG::[filesystem:505] build_filelists(): zips: []
2023-03-08 10:35:24,073::DEBUG::[filesystem:506] build_filelists(): rars: []
2023-03-08 10:35:24,073::DEBUG::[filesystem:507] build_filelists(): 7zips: []
2023-03-08 10:35:24,073::DEBUG::[filesystem:508] build_filelists(): ts: []
2023-03-08 10:35:24,074::INFO::[postproc:434] Unpacked files ['\\\\?\\I:\\DL\\_UNPACK_test_download_1000MB\\1GB-explanation.txt', '\\\\?\\I:\\DL\\_UNPACK_test_download_1000MB\\1GB.bin']
2023-03-08 10:35:24,074::INFO::[filesystem:329] Checking if any resulting filenames need to be sanitized
2023-03-08 10:35:24,074::INFO::[postproc:438] Finished unpack_magic on test_download_1000MB
2023-03-08 10:35:24,075::INFO::[postproc:1081] Removing unwanted file \\?\I:\DL\_UNPACK_test_download_1000MB\1GB-explanation.txt
2023-03-08 10:35:24,075::DEBUG::[filesystem:911] [sabnzbd\postproc.py.cleanup_list] Deleting file \\?\I:\DL\_UNPACK_test_download_1000MB\1GB-explanation.txt
2023-03-08 10:35:24,075::INFO::[postproc:1081] Removing unwanted file \\?\I:\DL\_UNPACK_test_download_1000MB\1GB.bin
2023-03-08 10:35:24,076::DEBUG::[filesystem:911] [sabnzbd\postproc.py.cleanup_list] Deleting file \\?\I:\DL\_UNPACK_test_download_1000MB\1GB.bin
2023-03-08 10:35:24,178::DEBUG::[filesystem:918] [sabnzbd\filesystem.py.cleanup_empty_directories] Removing dir \\?\I:\DL\_UNPACK_test_download_1000MB
2023-03-08 10:35:24,178::DEBUG::[filesystem:875] Renaming "\\?\I:\DL\_UNPACK_test_download_1000MB" to "\\?\I:\DL\test_download_1000MB"
2023-03-08 10:35:24,179::DEBUG::[filesystem:889] Error renaming "\\?\I:\DL\_UNPACK_test_download_1000MB" to "\\?\I:\DL\test_download_1000MB" <[WinError 2] The system cannot find the file specified: '\\\\?\\I:\\DL\\_UNPACK_test_download_1000MB' -> '\\\\?\\I:\\DL\\test_download_1000MB'>
2023-03-08 10:35:24,179::INFO::[notifier:123] Sending notification: Error - Error renaming "I:\DL\_UNPACK_test_download_1000MB" to "I:\DL\test_download_1000MB" (type=error, job_cat=None)
2023-03-08 10:35:24,179::ERROR::[postproc:498] Error renaming "I:\DL\_UNPACK_test_download_1000MB" to "I:\DL\test_download_1000MB"
2023-03-08 10:35:24,180::INFO::[postproc:503] Traceback:
Traceback (most recent call last):
File "sabnzbd\postproc.py", line 496, in process_job
File "sabnzbd\postproc.py", line 1206, in rename_and_collapse_folder
File "sabnzbd\decorators.py", line 39, in call_func
File "sabnzbd\filesystem.py", line 882, in renamer
FileNotFoundError: [WinError 2] The system cannot find the file specified: '\\\\?\\I:\\DL\\_UNPACK_test_download_1000MB' -> '\\\\?\\I:\\DL\\test_download_1000MB'
2023-03-08 10:35:24,181::INFO::[postproc:1185] Skipping sample-removal, false-positive
2023-03-08 10:35:24,181::DEBUG::[deobfuscate_filenames:88] No additional par2 files found to process
2023-03-08 10:35:24,181::INFO::[postproc:533] Running deobfuscate
2023-03-08 10:35:24,181::DEBUG::[deobfuscate_filenames:266] Trying to see if there are qualifying files to be deobfuscated
2023-03-08 10:35:24,182::INFO::[deobfuscate_filenames:278] No file given, or not found (None)
2023-03-08 10:35:24,182::INFO::[nzbstuff:1803] [sabnzbd\postproc.py.process_job] Purging data for job test_download_1000MB (delete_all_data=True)
2023-03-08 10:35:24,182::DEBUG::[articlecache:152] Purging 0 articles from the cache/disk
2023-03-08 10:35:24,182::DEBUG::[filesystem:944] Removing dir recursively \\?\X:\test_download_1000MB
2023-03-08 10:35:24,187::INFO::[notifier:123] Sending notification: Download Completed - test_download_1000MB (type=complete, job_cat=*)
2023-03-08 10:35:24,247::DEBUG::[sorting:637] Initial guess for test_download_1000MB is MatchesDict([('title', 'test download'), ('size', <Size [1000MB]>), ('type', 'movie')])
2023-03-08 10:35:24,248::DEBUG::[sorting:137] Matched sorter newsunpack__analyse_show to job test_download_1000MB (forced: True, custom: True)
2023-03-08 10:35:24,265::INFO::[database:292] Added job test_download_1000MB to history
2023-03-08 10:35:24,266::INFO::[postproc:129] Saving postproc queue
2023-03-08 10:35:24,266::DEBUG::[filesystem:1185] [sabnzbd\postproc.py.save] Saving data for postproc2.sab
2023-03-08 10:35:24,266::DEBUG::[filesystem:1117] [sabnzbd\filesystem.py.save_admin] Saving data for postproc2.sab in \\?\C:\Users\dean\AppData\Local\sabnzbd\admin
2023-03-08 10:35:24,266::INFO::[downloader:454] Post-processing finished, resuming download
2023-03-08 10:35:25,007::DEBUG::[interface:141] Request GET /api from 127.0.0.1 [Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0] {'mode': 'history', 'failed_only': '0', 'start': '0', 'limit': '250', 'last_history_update': '14', 'output': 'json', 'apikey':<APIKEY>', '_': '1678300455944'}
__version__ = 19
__encoding__ = utf-8
[misc]
pre_script = None
queue_complete = shutdown_pc
queue_complete_pers = 0
bandwidth_perc = 100
refresh_rate = 1
interface_settings = '{"dateFormat":"YYYY-MM-DD h:mma","extraQueueColumns":["age"],"extraHistoryColumns":["size"],"displayCompact":false,"displayFullWidth":false,"displayTabbed":true,"confirmDeleteQueue":true,"confirmDeleteHistory":true}'
queue_limit = 250
config_lock = 0
sched_converted = 0
notified_new_skin = 2
direct_unpack_tested = 1
check_new_rel = 1
auto_browser = 0
language = en
enable_https_verification = 1
host = 127.0.0.1
port = 8080
https_port = ""
username=<USER>
password=<PASSWORD>
bandwidth_max = 110M
cache_limit = -1
web_dir = Glitter
web_color = Auto
https_cert = server.cert
https_key = server.key
https_chain = ""
enable_https = 0
inet_exposure = 0
api_key = <HASH>a8733fe
nzb_key = <HASH>70552f2
permissions = ""
download_dir = X:\
download_free = ""
complete_dir = I:\DL\
complete_free = 2G
fulldisk_autoresume = 1
script_dir = ""
nzb_backup_dir = E:\NZB\sab\imported
admin_dir = admin
dirscan_dir = E:\NZB\sab
dirscan_speed = 5
password_file = ""
log_dir = logs
max_art_tries = 5
load_balancing = 2
top_only = 0
sfv_check = 0
quick_check_ext_ignore = nfo, sfv, srr
script_can_fail = 1
enable_recursive = 1
flat_unpack = 0
par_option = ""
pre_check = 0
nice = ""
win_process_prio = 3
ionice = ""
fail_hopeless_jobs = 1
fast_fail = 1
auto_disconnect = 1
no_dupes = 2
no_series_dupes = 0
series_propercheck = 0
pause_on_pwrar = 2
ignore_samples = 1
deobfuscate_final_filenames = 1
auto_sort = ""
direct_unpack = 1
direct_unpack_threads = 3
propagation_delay = 0
folder_rename = 1
replace_spaces = 0
replace_dots = 0
safe_postproc = 1
pause_on_post_processing = 0
enable_all_par = 1
sanitize_safe = 0
cleanup_list = nfo, sfv, url, txt, exe, bin, com, bat, html, htm, srr, bat, cmd, lib, dll
unwanted_extensions = ,
action_on_unwanted_extensions = 1
unwanted_extensions_mode = 0
new_nzb_on_failure = 1
history_retention = 0
enable_meta = 1
quota_size = ""
quota_day = ""
quota_resume = 0
quota_period = m
rating_enable = 0
rating_host = ""
rating_api_key = ""
rating_filter_enable = 0
rating_filter_abort_audio = 0
rating_filter_abort_video = 0
rating_filter_abort_encrypted = 0
rating_filter_abort_encrypted_confirm = 0
rating_filter_abort_spam = 0
rating_filter_abort_spam_confirm = 0
rating_filter_abort_downvoted = 0
rating_filter_abort_keywords = ""
rating_filter_pause_audio = 0
rating_filter_pause_video = 0
rating_filter_pause_encrypted = 0
rating_filter_pause_encrypted_confirm = 0
rating_filter_pause_spam = 0
rating_filter_pause_spam_confirm = 0
rating_filter_pause_downvoted = 0
rating_filter_pause_keywords = ""
enable_tv_sorting = 0
tv_sort_string = ""
tv_categories = tv,
enable_movie_sorting = 0
movie_sort_string = ""
movie_sort_extra = -cd%1
movie_extra_folder = 0
movie_categories = movies,
enable_date_sorting = 0
date_sort_string = ""
date_categories = tv,
schedlines = ,
rss_rate = 15
ampm = 0
replace_illegal = 1
start_paused = 1
enable_par_cleanup = 1
process_unpacked_par2 = 1
enable_unrar = 1
enable_unzip = 1
enable_7zip = 1
enable_filejoin = 1
enable_tsjoin = 1
overwrite_files = 1
ignore_unrar_dates = 0
backup_for_duplicates = 1
empty_postproc = 0
wait_for_dfolder = 0
rss_filenames = 0
api_logging = 1
html_login = 1
osx_menu = 1
osx_speed = 1
warn_dupl_jobs = 0
helpfull_warnings = 1
keep_awake = 1
win_menu = 1
allow_incomplete_nzb = 0
enable_broadcast = 1
ipv6_hosting = 0
fixed_ports = 1
api_warnings = 1
disable_api_key = 0
no_penalties = 1
x_frame_options = 1
require_modern_tls = 0
num_decoders = 3
rss_odd_titles = nzbindex.nl/, nzbindex.com/, nzbclub.com/
req_completion_rate = 100.2
selftest_host = self-test.sabnzbd.org
movie_rename_limit = 100M
episode_rename_limit = 20M
size_limit = 0
show_sysload = 2
history_limit = 250
wait_ext_drive = 5
max_foldername_length = 246
nomedia_marker = ""
ipv6_servers = 1
url_base = /sabnzbd
host_whitelist = dean-pc,
local_ranges = ,
max_url_retries = 10
downloader_sleep_time = 10
ssdp_broadcast_interval = 15
email_server = ""
email_to = <REMOVED>
email_from = ""
email_account = <REMOVED>
email_pwd = <REMOVED>
email_endjob = 0
email_full = 0
email_dir = dean
email_rss = 0
email_cats = *,
preserve_paused_state = 0
helpful_warnings = 1
allow_old_ssl_tls = 0
socks5_proxy_url = ""
num_simd_decoders = 2
ext_rename_ignore = ,
decoders = 0
assemblers = 0
backup_dir = E:\NZB\backup
replace_underscores = 0
tray_icon = 1
sorters_converted = 1
enable_season_sorting = 1
receive_threads = 2
switchinterval = 0.005
[logging]
log_level = 2
max_log_size = 5242880
log_backups = 5
[ncenter]
ncenter_enable = 0
ncenter_cats = *,
ncenter_prio_startup = 0
ncenter_prio_download = 0
ncenter_prio_pause_resume = 0
ncenter_prio_pp = 0
ncenter_prio_complete = 0
ncenter_prio_failed = 0
ncenter_prio_disk_full = 0
ncenter_prio_new_login = 0
ncenter_prio_warning = 0
ncenter_prio_error = 0
ncenter_prio_queue_done = 0
ncenter_prio_other = 0
[acenter]
acenter_enable = 1
acenter_cats = *,
acenter_prio_startup = 0
acenter_prio_download = 0
acenter_prio_pause_resume = 0
acenter_prio_pp = 0
acenter_prio_complete = 0
acenter_prio_failed = 0
acenter_prio_disk_full = 1
acenter_prio_new_login = 0
acenter_prio_warning = 0
acenter_prio_error = 0
acenter_prio_queue_done = 0
acenter_prio_other = 0
[ntfosd]
ntfosd_enable = 0
ntfosd_cats = *,
ntfosd_prio_startup = 0
ntfosd_prio_download = 0
ntfosd_prio_pause_resume = 0
ntfosd_prio_pp = 0
ntfosd_prio_complete = 0
ntfosd_prio_failed = 0
ntfosd_prio_disk_full = 0
ntfosd_prio_new_login = 0
ntfosd_prio_warning = 0
ntfosd_prio_error = 0
ntfosd_prio_queue_done = 0
ntfosd_prio_other = 0
[prowl]
prowl_enable = 0
prowl_cats = *,
prowl_apikey = <REMOVED>
prowl_prio_startup = -3
prowl_prio_download = -3
prowl_prio_pause_resume = -3
prowl_prio_pp = -3
prowl_prio_complete = 0
prowl_prio_failed = 1
prowl_prio_disk_full = 1
prowl_prio_new_login = -3
prowl_prio_warning = -3
prowl_prio_error = -3
prowl_prio_queue_done = 0
prowl_prio_other = 0
[pushover]
pushover_token = <REMOVED>
pushover_userkey = <REMOVED>
pushover_device = ""
pushover_emergency_expire = 3600
pushover_emergency_retry = 60
pushover_enable = 0
pushover_cats = *,
pushover_prio_startup = -3
pushover_prio_download = -2
pushover_prio_pause_resume = -2
pushover_prio_pp = -3
pushover_prio_complete = -1
pushover_prio_failed = -1
pushover_prio_disk_full = 1
pushover_prio_new_login = -3
pushover_prio_warning = 1
pushover_prio_error = 1
pushover_prio_queue_done = -1
pushover_prio_other = -1
[pushbullet]
pushbullet_enable = 0
pushbullet_cats = *,
pushbullet_apikey = <REMOVED>
pushbullet_device = ""
pushbullet_prio_startup = 0
pushbullet_prio_download = 0
pushbullet_prio_pause_resume = 0
pushbullet_prio_pp = 0
pushbullet_prio_complete = 1
pushbullet_prio_failed = 1
pushbullet_prio_disk_full = 1
pushbullet_prio_new_login = 0
pushbullet_prio_warning = 0
pushbullet_prio_error = 0
pushbullet_prio_queue_done = 0
pushbullet_prio_other = 1
[nscript]
nscript_enable = 0
nscript_cats = *,
nscript_script = None
nscript_parameters = ""
nscript_prio_startup = 1
nscript_prio_download = 0
nscript_prio_pause_resume = 0
nscript_prio_pp = 0
nscript_prio_complete = 1
nscript_prio_failed = 1
nscript_prio_disk_full = 1
nscript_prio_new_login = 0
nscript_prio_warning = 0
nscript_prio_error = 0
nscript_prio_queue_done = 1
nscript_prio_other = 1
[servers]
[[news.newshosting.com]]
name = news.newshosting.com
displayname = news.newshosting.com
host = news.newshosting.com
port = 563
timeout = 60
username=<USER>
password=<PASSWORD>
connections = 50
ssl = 1
ssl_verify = 2
ssl_ciphers = ""
enable = 1
required = 0
optional = 0
retention = 0
expire_date = ""
quota = ""
usage_at_start = 0
send_group = 0
priority = 0
notes = ""
[categories]
[[*]]
name = *
order = 0
pp = 3
script = Default
dir = ""
newzbin = ""
priority = 0
[[movies]]
name = movies
order = 0
pp = ""
script = Default
dir = E:\@Plex\*
newzbin = ""
priority = -100
[[tv]]
name = tv
order = 0
pp = ""
script = Default
dir = E:\@Plex\*
newzbin = ""
priority = -100
[[books]]
name = books
order = 0
pp = ""
script = Default
dir = E:\Books
newzbin = ""
priority = -100
[rss]
[[Feed1]]
name = Feed1
uri =
https://api.nzbgeek.info/rss?t=-2&limit ... 71GUBF2Qcg,
cat = ""
pp = ""
script = ""
enable = 1
priority = -100
filter0 = "", "", "", A, *, -100, 1