QTS 5.2.9.3499 build 20260514 2026-05-22
Applicable Models
HS-251,HS-251+,S2,
QMiroPlus-201W,
Mustang-200-i7-1T-32G-R10,Mustang-200-i5-1T-32G-R10,Mustang-200-C-8G-R10,Mustang-200,
QBoat Sunny,
QGD-1600P,QGD-1600,
QGD-1602P,QGD-1602,
QGD-3014-16PT,
TS-453S Pro,TS-853S Pro,
TS-531P,
TS-216,TS-416,
TS-128A,TS-228A,TS-212P3,TS-130,D1 Rev-B,
TS-231P3,TS-431P3,
TS-231P2,TS-431P2,
TS-831X,TS-531X,TS-431X,TS-431X2,TS-431X3,TS-431KX,
TS-431XU,TS-831XU,TS-1231XU,TS-431XU-RP,TS-831XU-RP,TS-1231XU-RP,TS-431XeU,
TS-932X,TS-832X,TS-332X,TS-532X,TS-932PX,TS-832PX,TS-432X,TS-632X,
TS-432XeU,TS-432XU-RP,TS-432XU,TS-832XU-RP,TS-832XU,TS-1232XU-RP,TS-1232XU,TS-432PXU,TS-432PXU-RP,TS-832PXU,TS-832PXU-RP,TS-1232PXU,TS-1232PXU-RP,
TS-133,TS-233,TS-433,D4 Rev-C,TS-216G,
TS-1635,
TS-1635AX,
TS-435XeU,
TS-231+,TS-431+,TS-131P,TS-231P,TS-431P,TS-131K,TS-231K,TS-431K,D2,D4,D4 Rev-B,
TS-251,TS-451,TS-651,TS-851,TS-451S,TS-251+,TS-451+,TS-351,D2 Pro Rev-B,D4 Pro Rev-B,
TS-251A,TS-451A,D2 Pro,D4 Pro,
TS-251B,
TS-451DeU,TS-453DU,TS-453DU-RP,TS-853DU-RP,TS-1253DU-RP,
TS-451U,
TS-253 Pro,TS-453 Pro,TS-653 Pro,TS-853 Pro,TS-453mini,IS-453S,
TS-453Bmini,TS-253B,TS-453B,TS-653B,TS-453BT3,TS-253Be,TS-453Be,
TS-853BU,TS-853BU-RP,TS-1253BU,TS-1253BU-RP,TS-453BU,TS-453BU-RP,
HS-453DX,TBS-453DX,TS-251D,TS-253D,TS-653D,TS-453D,TS-451D,TS-453Dmini,TS-451D2,
TBS-453A,TS-253A,TS-453A,TS-653A,TS-853A,D6 Pro,D8 Pro,
TS-453U,TS-853U,TS-1253U,TS-453U-RP,TS-853U-RP,TS-1253U-RP,R4,
TVS-463,TVS-663,TVS-863,TVS-863+,TS-563,TS-963X,TS-963N,
TS-463U,TS-463U-RP,TS-863U,TS-863U-RP,TS-1263U,TS-1263U-RP,TS-463XU,TS-463XU-RP,TS-863XU,TS-863XU-RP,TS-1263XU,TS-1263XU-RP,
TS-564,HS-264,TBS-464,TS-262C,TS-462C,TS-264C,TS-464C,TS-364,TS-464,TS-664,TS-262,TS-462,TS-264,TS-464C2,TS-262A,TS-462A,
TS-464U,TS-464U-RP,TS-1264U-RP,TS-464eU,TS-864eU,TS-864eU-RP,
TVS-471,TVS-671,TVS-871,TVS-871T,
TVS-871U-RP,TVS-1271U-RP,TVS-471U-RP,TVS-471U,R8,
TVS-472XT,TVS-672XT,TVS-872XT,TVS-672N,TVS-872N,TVS-872X,TVS-672X,
TVS-872XU,TVS-872XU-RP,TVS-1272XU-RP,TVS-1672XU-RP,TVS-2472XU-RP,TVS-972XU,TVS-972XU-RP,
TVS-473,TVS-673,TVS-873,TVS-473e,TVS-673e,TVS-873e,
TS-h973AX,TS-473A,TS-673A,TS-873A,
TS-873AU,TS-873AU-RP,TS-1273AU-RP,TS-1673AU-RP,TS-873AeU,TS-873AeU-RP,
TS-873U,TS-1273U,TS-1673U,TS-873U-RP,TS-1273U-RP,TS-1673U-RP,
TVS-675,
TVS-h875U,TVS-h875U-RP,TVS-h1275U-RP,TVS-h1675U-RP,
TS-1277,TS-877,TS-677,TS-1677X,
TS-877XU,TS-877XU-RP,TS-1277XU-RP,TS-1677XU-RP,TS-2477XU-RP,TS-977XU-RP,TS-977XU,TS-h1277XU-RP,TS-h977XU-RP,TS-h1677XU-RP,TS-h2477XU-RP,
TS-EC880 Pro,TS-EC1080 Pro,TVS-EC880,TVS-EC1080,TVS-EC1080+,
TS-EC880U,TS-EC1280U,TS-EC1680U,TS-EC2480U R2,TVS-EC1280U-SAS-RP R2,TVS-EC1580MU-SAS-RP R2,TVS-EC1680U-SAS-RP R2,TVS-EC2480U-SAS-RP R2,TS-EC2480U,TS-EC880U R2,TS-EC1280U R2,TS-EC1680U R2,TVS-EC1280U-SAS-RP,TVS-EC1580MU-SAS-RP,TVS-EC1680U-SAS-RP,TVS-EC2480U-SAS-RP,R12,R16,R24,
TVS-882T,TVS-1282T,TVS-682,TVS-882,TVS-1282,TVS-682T,TVS-1282T3,TVS-882BR,TVS-882BRT3,
TVS-882ST,TVS-882ST3,
TVS-1582TU,
TS-883XU,TS-883XU-RP,TS-1283XU-RP,TS-1683XU-RP,TS-983XU,TS-983XU-RP,TS-2483XU-RP,TS-h1283XU-RP,TS-h2483XU-RP,TS-h1683XU-RP,
TS-1685,TS-h886,TS-h686,
TES-3085U,TES-1885U,TS-1886XU-RP,TS-1886XU-RP R2,TS-h1886XU-RP,TS-h1886XU-RP R2,
TS-2888X,TVS-h1688X,TVS-h1288X,
TS-h3088XU-RP,
TDS-16489U,
TS-h2490FU,TS-h1090FU,
TS-328,TS-428,TS-230,D2 Rev-B,
TS-551,
TS-473,TS-673,TS-873,
TVS-951X,TVS-951N,
GM-1000,TNS-h1083X,TNS-h1083X (A Side),TNS-h1083X (B Side),
TS-i410X,TS-410E,
TS-h1290FX,
TS-253E,TS-453E,
TS-h987XU-RP,TS-h1887XU-RP,TS-h2287XU-RP,TS-h3087XU-RP,
TVS-h474,TVS-h674,TVS-h874,TVS-h874X,TVS-h674T,TVS-h874T,
TDS-h2489FU,TDS-h2489FU R2,
TS-1655,TS-855X,
TS-855eU,TS-855eU-RP,TS-h1655XeU-RP,
TS-466C,
TS-AI642,
TBS-h574TX,
TS-h1277AXU-RP,TS-h1677AXU-RP,TS-h3077AFU,TS-h2477AXU-RP,TS-h1077AFU,
TS-433eU,
TS-h765eU,TS-h665U,TS-h665U-RP,TS-h1465U-RP,TS-h1065eU,TS-h1065eU-RP,
TS-h1277AFX,TVS-h877AX,TVS-h1277AX,TVS-h1677AX,
Qu805,Qu605,Qu405,TS-h665,TS-h865,
QBoat-300,
QAI-h1290FX
Security Updates
Applied multiple security updates to further enhance system security.
Fixed Issues
Fixed an issue that would cause the symbolic link of an external USB drive to disappear.
Fixed an issue where the Dashboard would incorrectly display a volume as “Full” when the volume was set to read-only.
Fixed an issue where Resource Monitor could not display the name or ID of disks installed on the TL-R1220Sep-RP expansion unit.
Fixed an issue where users could not perform a reverse DNS lookup via PTR from the localhost.
Fixed an issue where the system would send packets to external networks via 127.0.0.0/8 (loopback addresses).
Fixed an issue that would cause system instability during large file transfers from an external HDD to the NAS.
Fixed an issue with anomalous IR-related event logs during system startup even though the IR sensor was disabled.
Fixed an issue where QTS would not restore a shared folder whose description contained certain special characters when restoring system settings.
Fixed an issue where the NAS could not join an Active Directory domain on which the NTLM protocol was disabled.
Fixed an issue where users could not shut down QuTScloud if QEMU Agent was enabled.
Fixed an issue where the system would display a message about network speed mismatch when users enabled SMB multichannel for a virtual switch.
Fixed an issue where the system would not delete temporary files after backing up system files.
Fixed an issue where mcelog would keep sending error messages if it did not support the processor on the NAS model.
Fixed an issue where the data type of OID (Object Identifier) returned by SNMP Agent was not consistent with the definition of MIB (Management Information Base).
Fixed an issue where Arcserve ImageManager could not verify backup jobs on the NAS.
Fixed an issue where users could not transfer files from macOS to an HFS+ external drive on the NAS via SMB.
Fixed an issue where uploading a large number of files to a shared folder via a SmartURL would fill up the /tmp directory.
Fixed an issue where the system could not display correct storage pool capacity after expanding a storage pool by reducing over-provisioning.
Fixed an issue where Windows Previous Versions would display incomplete file lists if snapshot were taken when orphan inodes were present.
Fixed an issue where new users could still log in via SMB without changing their password even though “Change password on first login” was enabled.
Fixed an issue where domain users could not view some shared folders via FTP after administrators added a domain user group.
Fixed an issue where a guest user would connect to the tmp folder when trying to connect to the NAS home folder.
Fixed an issue where LDAP domain users could log in to the NAS via SMB but not via HTTP/HTTPS.