Install this version with Unity Hub.
Select the runtime platforms of your choice from the list below (the desktop runtime is included as standard) or, to install the full complement of runtime platforms, use the download assistant installer above.
Known Issues in 2021.1.26f1
Asset Bundles: Building process of the AssetBundles is slow when the file count is huge (1358059)
Asset Importers: [MacOS] Second Unity instance in Activity Monitor is "not responding” after importing (1331736)
Global Illumination: Crash while sculpting Terrain and Baking Lightmaps (1266511)
Global Illumination: [Enlighten] Fatal Error when closing the Editor while Generating Lighting (1354238)
Global Illumination: [LightProbes] Probes lose their lighting data after entering Play mode when Baked and Realtime GI are enabled (1052045)
IL2CPP: [Android] [IL2CPP] Old build artifacts are used when ARMv7 and ARM64 build follows a ARM64 only build from different git branch (1347245)
Input: Input.GetKey does not trigger when the mouse cursor is outside the Game window (1358134)
Input: Scrolling is jumping when scrolling in the Input Manager (1362327)
Inspector Framework: Long Layer names are not fully visible in the drop-down list when selecting it in the Inspector window from Script component (1366623)
Mobile: [Android] App stops due to OnPixelCopyFinishedListener not being supported on devices with lower than 24 SDK (1331290)
Packman: User can't easily configure location of both UPM and Asset Store package local cache (1317232)
Profiling: Profiler's timeline view loses context frames when frames go out of Frame Count bounds (1367470)
Scene Management: Instantiated FBX through code throws error after leaving Play Mode (1363573)
Scripting: Unity does not execute code weavers when the project is opened for the first time (1350116)
uGUI: Poor performance when loading or unloading a large Scene (1360901)
Video: Crash on WindowsVideoMedia::StepAllStreams when reimporting a .m4v file (1340340)
Vulkan: [Editor] The Scene's GameObjects textures are seemingly random and change colours depending on the Scene's Camera pos. (1337772)
Window Management: Broken layout stops panels located in the top left corner of the Editor from rendering in the Karting Microgame project (1367783)
XR SDK: [XR][Linux] Scene View doesn't render when opening new AR or VR Template project or pressing "Show Tutorials" (1362435)
2021.1.26f1 Release Notes
Version Control: Added light and dark mode versions of avatar icon.
Version Control: Added notification status icons.
Version Control: Workspace migration from Collab to Plastic which can be done with or without Plastic installed.
- Scripting: Add GameObject link to Warning message: "SendMessage cannot be called during Awake, CheckConsistency, or OnValidate.".
Version Control: Improved usage analytics around Editor and Plugin version.
Version Control: Workspace Migration Adjustments.
Android: Fixed an issue where Display.systemWidth, Display.systemHeight and Screen.resolutions were not updated when folding/unfolding a Galaxy Fold device. (1345508)
Android: Fixed an issue where Java local reference was leaking in UnityWebRequest, VideoPlayer. (1297185)
Animation: Fixed a potential crash when generating asset previews, if destructive methods were called in user callbacks. (1343886)
Animation: Fixed an issue where the animation curve editor was swapping unintentionally when curves were edited in two different inspectors. (1308938)
Asset Pipeline: Fixed an issue with fields with default values not being set to default value, if field was removed from assets. (1337405)
Asset Pipeline: Fixed an issue where the artifact dependency would get ignored. (1318602)
Audio: Fixed an issue where exposing multiple send levels in the audio mixer were not working correctly. Previously created mixers with exposed send levels will cause a warning to be logged on editor startup and the send levels will have to be re-exposed. (1285638)
Documentation: Fixed an incorrect measurement units for ArticulationDrive.forceLimit. (1369825)
Editor: Fixed a null reference exception when opening a popup window in some cases (when a previous popup window got somehow saved into a window layout). (1295445)
Editor: Fixed an issue when launching a Linux standalone player whose folder was in $PATH. (1339398)
Editor: Fixed an issue where preset for ThemeStyleSheet was not disabled. (1298540)
Editor: Fixed an issue where Reorderable list null item were not displayed correctly. (1339759)
Editor: Fixed an issue where ReorderableList elements when reordering would disapear. (1353883)
Editor: Fixed an issue where the Avatar Stage editing closed on clicking anywhere in the Scene view or Hierarchy when two Inspector windows were used. (1330120)
Editor: Fixed an issue where the gradient picker closed when clicking on the gradient field. (1285035)
Editor: Fixed an issue where there was missing tooltips to the buttons of the Simulator view Control Bar. (1288711)
Editor: Fixed an issue where variables were not resolved before reading style values. (1297227)
Graphics: Fixed a Metal enforce depth clearing issue when "Don't care" load action was used, to avoid potential subtle issues later on. (1330613)
Graphics: Fixed a crash when loading really large (more than 2GB size) meshes. (1319594)
Graphics: Fixed a Mac Standalone Player memory leak issue that came with the change to presenting with CVDisplayLink. (1365570)
Graphics: Fixed an alpha dilation filtering issue when a 16 bit-per-component texture with transparent pixels was imported. (1355265)
Graphics: Fixed an issue where frames were being unnecessarily dropped before presenting on Metal OSX when using CVDisplayLink. (1363963)
Graphics: Fixed an issue where memory would leak from mesh due to mismatching memory labels. (1362505)
Graphics: Fixed an issue where MeshRenderer was rendering a mesh when the MeshFilter had been removed while editing the prefab in context. (1251154)
IL2CPP: Fixed a conversion issue on methods with ref readonly return values. (1367462)
IL2CPP: Fixed a possible crash in the GC code when the mark stack overflows while script debugging was enabled if many threads were created. (1361799)
IL2CPP: Fixed build issue with Linux player on Windows where builds would fail when the logged in user has a space in their username. (1336012)
iOS: Fixed an issue where erroneous ads were enabled.
macOS: Fixed an issue where the Xbox wireless gamepad triggers and DPAD were not working in the old Input. (1342338)
macOS: Fixed an issue where there was an inverted Y position of mouse cursor using New Input's Warp mouse. (1311064)
Particles: Fixed a culling issue if a Particle System mesh had changed. (1329097)
Particles: Fixed a stuttering slow-motion preview issue when using Custom Data. (1365360)
Physics: Fixed an issue with edge selection when editing the PolygonCollider2D or EdgeCollider2D with large Transform scales. (1361571)
Prefabs: Fixed Prefab sorting issue that re-arranged order of prefabs due to AddedComponents were not being handled properly. (1252436)
Profiler: Fixed an issue where Profiler.GetTotalAllocatedMemoryLong reporting was increasing values while loading and unloading the same scene. (1364643)
Scripting: Fixed errors that were appearing in console when using UI Toolkit package and opened the Profiler (Standalone Process). (1346850)
Timeline: Fixed an issue where audio tracks did not respect audio listener pause state. (1313186)
UI: Fixed an issue where calculation of size was incorrect for cameras that have a view rect set. (1325324)
UI: Fixed an issue where wrong aspect was used when a explicit aspect is assigned.
UI Toolkit: Fixed a wrong mouse position on events issue when a UI Toolkit element has mouse capture, the mouse was outside the element's editor window and that window did not have the active mouse capture from the OS. (1342115)
UI Toolkit: Fixed an exception thrown when repainting a panel that used a destroyed texture. (1364578)
UI Toolkit: Fixed an issue where dragging on overlapping UIDocuments was broken when using EventSystem and StandaloneInputModule.
UI Toolkit: Fixed an issue where the pointer events were not working correctly when multiple UI Documents had different Screen Match values. (1341135)
Version Control: Fixed a CoreServices namespace naming conflict.
Version Control: Fixed an issue where there was a missing Enterprise login link.
Version Control: Fixed low resolution icons issue in light theme.
Version Control: Fixed some situations where the history window would be blank.
Windows: Fixed an issue where the Physics simulations and FixedUpdate was running while the splashscreen was being displayed on Windows Standlaone and Universal Windows Platform. (1362362)