Software:List of shell icon overlay identifiers

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Shell icon overlays are icons that Microsoft Windows can display on top of folder icons. A list of icon overlays is specified in the Windows Registry in the location mentioned further in this article. In the current implementation there are 4 bits in a structure that define the overlay index providing for a maximum of 15 overlays, 4 of which are reserved by the operating system.[1] Therefore, even though more than 11 icon overlay handlers can be registered, only the first 11 icon overlays supplied by icon overlay handlers are effectively displayed. The remaining icon overlay handlers are not used.[2] Many applications such as versioning software like TortoiseSVN and cloud storage synchronization software like Nextcloud, Dropbox, and OneDrive add their own icon overlay handlers to the Registry upon installation. Below is a table of shell icon overlay identifiers by software.

Location

All shell icon overlay identifiers are located in the Windows Registry.

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers

List

Category Software Registry Name Icon Description (Symbol) Icon Version (Date) Source
Cloud Storage Services Adobe Creative Cloud rainbow icon.svgAdobe Creative Cloud AccExtIco1 DB-Synced.png[3] Synced file or folder; finished sync.
AccExtIco2 [3] In process of syncing to ACC servers. (Symbol: Horizontal blue arrows)
AccExtIco3 unknown (Symbol: unknown)
Dropbox Icon.svgDropbox DropboxExt01 DB-Synced.png[4][5] Synced file or folder; finished sync. Downloaded local content on your hard drive.[6] (Symbol: Solid Green check ✓) Windows logo - 2012 (dark blue).svgv73.4.118(May 24, 2019) See inside each cell.
DropboxExt02 DB-Progress.png[4][5] Sync in progress; in process of syncing to Dropbox servers.[6] (Symbol: Blue w/ rotating arrow)
DropboxExt03 DB-Error.png[4] DB-Error.png[4](Year: 2019): Sync not happening; something wrong due to invalid file names, permission error, rapid multiple edits, or out of storage space.[6] (Symbol: Red X) OR DB-GreenLock.png[5] (Year: 2014)
DropboxExt04 DB-NotSyncing.png[4] DB-NotSyncing.png[4](Year: 2019): A file or folder is not syncing when using the Selective-sync feature (meaning you have opted not to sync this file or folder on your computer). In general, selectively synced files or folders will not appear in Dropbox Folder on your computer. However, if you create two files or folders with the same name, the gray icon will appear, indicating that one of the files is not being synced.[6] (Symbol: Gray minus) OR DB-BlueLock.png[5](Year: 2014)
DropboxExt05 DB-GreenLock.png[4] DB-GreenLock.png[4](Year: 2019): Locked: Synced!; View-only access to file or folder. Read-only, cannot edit or share with others. Request edit access with owner.[6] (Symbol: Green check ✓ w/ Lockpad) OR DB-Error.png[5](Year: 2014)
DropboxExt06 DB-BlueLock.png[4] DB-BlueLock.png[4] (Year: 2019): Locked: Sync in progress; View-only access to file or folder. Read-only, cannot edit or share with others. Request edit access with owner.[6] (Symbol: Blue w/ rotating arrows and w/ Lockpad) OR DB-RedErrorLock.png[5](Year: 2014)
DropboxExt07 DB-Cloud.png[4] DB-Cloud.png[4](Year: 2019): SmartSync feature, Online-Only content. These appear in your Dropbox Folder on your computer, but they are not fully downloaded. Placeholder icons.[6] (Symbol: Grey w/ white cloud shape) OR DB-NotSyncing.png[5](Year: 2014)
DropboxExt08 DB-CloudLocked.png[4] DB-CloudLocked.png[4](Year: 2019): SmartSync feature, Online-Only content. These appear in your Dropbox Folder on your computer, but they are not fully downloaded. Placeholder icons.View-only access to file or folder. Read-only, cannot edit or share with others. Request edit access with owner.[6] (Symbol: Grey w/ white cloud shape and w/ Lockpad) OR DB-GreyLock.png[5](Year: 2014)
DropboxExt09 DB-GreenCheckWhite.png[4] Mixed State: contains both local and online-only files.[6] (Symbol: White and Green check ✓)
DropboxExt10 DB-GreenCheckWhite Lock.png[4] Locked: Read-only; Mixed State: contains both local and online-only files.[6] (Symbol: White and Green check ✓ w/ Lockpad)
Antu onedrive.svgOneDrive Personal OneDrive1 OneDrive ERROR.png Cannot Sync (i.e. ErrorOverlayHandler Class) (Symbol:Red X) Windows logo - 2012 (dark blue).svgv19.070 (May 13, 2019) 1,2,3,4
OneDrive2 OneDrive Shared Human.png Shared with others (i.e. [SharedOverlayHandler Class) (Symbol:Green + People)
OneDrive3 OneDrive UpToDate Cloud.png Online-only files do not take up space on your device, file is only available online, but can be downloaded with internet. (i.e. UpToDateCloudOverlayHandler Class) (Symbol: Blue cloud)
OneDrive4 OneDrive GREEN CHECK.png Files is "Always-keep-on device". 'Always available files' download to device and take up space, always available even without internet. (i.e. UpToDatePinnedOverlayHandler Class) (Symbol: Green ✓ w/ solid green background)
OneDrive5 OneDrive Syncing.png Sync in progress (i.e. SyncingOverlayHandler Class) (Symbol: Rotating blue arrows)
OneDrive6 OneDrive ReadOnly Lock.png Locked (read only); Has settings preventing it from syncing. (i.e. [ReadOnlyOverlayHandler Class) (Symbol: Green Lockpad)
OneDrive7 Onedrive UpToDate Unpinned.png When you open an online-only file, it downloads to your device and becomes locally available file, even without internet. (i.e. UpToDateUnpinnedOverlayHandler Class) (Symbol: Green ✓ w/ white background)
Antu onedrive.svgOneDrive for Business (formerly Sky Drive) SkyDrivePro1 (ErrorConflict) OneDrive ERROR.png Error Conflict (Symbol: Red X) Windows logo - 2012 (dark blue).svgv19.070 (May 13, 2019) 1
SkyDrivePro2 (SyncInProgress) OneDrive Syncing.png Sync in Progress (Symbol: Blue rotating arrow)
SkyDrivePro3 (InSync) OneDrive GREEN CHECK.png In Sync (Symbol: Solid Green check ✓)
NextCloud OCError OCError-NextCloud.png Sync Error or Blacklisted file (Symbol: Red X) Windows logo - 2012 (dark blue).svgv2.5(Apr 11, 2019) 1
OCOK OCOK-NextCloud.png File is Synced w/ server (Symbol: Solid Green check ✓)
OCOKShared OCShared-NextCloud.png Shared (Symbol: Green share icon)
OCSync OCSync-NextCloud.png Sync in progress (Symbol: Blue w/ rotating arrow)
OCWarning OCWarning-NextCloud.png Sync Error or Warning (Symbol: Yellow exclamation !)
Google Backup & Sync (formerly Google Drive) GoogleDriveBlacklisted GD-UnableSync.png Not able to Sync (Symbol: Red X) Windows logo - 2012 (dark blue).svgv3.43.4275 (Oct 15, 2018) 1
GoogleDriveSynced GD-Synced.png Synced (Symbol: Green check ✓)
GoogleDriveSyncing GD-Syncing.png Sync in progress (Symbol: Rotating blue arrows)
odrive 0drive.Active Sync in progress (Symbol: Fuchsia w/ rotating white arrows) Windows logo - 2012 (dark blue).svgv6627 (Jul 01, 2020)
0drive.Synced Synced (Symbol: Light blue w/ white check ✓)
Source Code Management System clients TortoiseGit logo.svgTortoiseSVN, TortoiseGit and TortoiseHg Tortoise1Normal SVN-Normal.png Normal (Symbol: Solid Green check ✓) Windows logo - 2012 (dark blue).svgv1.12.0 (Apr 17, 2019) 1,2
Tortoise2Modified SVN-Modified.png Modified (Symbol: Red !)
Tortoise3Conflict SVN-Conflict.png Conflict (Symbol: Yellow triangle !)
Tortoise4Locked SVN-Locked.png Locked (Symbol: Yellow Lockpad)
Tortoise5ReadOnly SVN-ReadOnly.png Read only (Symbol: Grey check ✓)
Tortoise6Deleted SVN-RedX.png Deleted (Symbol: Red X)
Tortoise7Added SVN-Added.png Added (Symbol: Blue plus +)
Tortoise8Ignored SVN-Ignored.png Ignored (Symbol: Grey minus)
Tortoise9Unversioned SVN-Unversioned.png Unversioned (Symbol: Blue question mark ?)
NTFS link Manage Link Shell Extension HardLinkMenu Context Menu Windows logo - 2012 (dark blue).svgv3.9.3.1 (Nov 23, 2019)
IconOverlayHardLink Hardlink Vista.svg / Hardlink Win10.svg Hardlink (Symbol: Red arrow)
IconOverlayJunction JunctionIcon Vista.svg / JunctionIcon Win10.svg Junction (Symbol: Metal link)
IconOverlaySymbolicLink SymbolicLink Vista.svg / SymbolicLink Win10.svg Symbolic Link (Symbol: Green arrow)

References

  1. ↑ "'Why does Windows limit icon overlays to 15?'". January 12, 2017. https://superuser.com/questions/1166577/why-does-windows-limit-icon-overlays-to-15. 
  2. ↑ "Registered icon overlay handlers aren't used by Windows Shell". Oct 30, 2015. https://support.microsoft.com/en-us/help/3106961/registered-icon-overlay-handlers-aren-t-used-by-windows-shell. 
  3. ↑ 3.0 3.1 "Sync, Store, Share Files from Desktop to Creative Cloud". October 21, 2013. https://www.youtube.com/watch?v=nCwFaqhc2sk&t=46s. 
  4. ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 "Which Dropbox icon is for which Icon Overlay Identifier name?". June 26, 2019. https://superuser.com/a/1453384. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 A, Danny (Oct 16, 2014). "Which Dropbox icon is for which Icon Overlay Identifier name?". https://superuser.com/a/827354. 
  6. ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 "What do the sync icons mean and what should I do if they're missing?". https://help.dropbox.com/installs-integrations/sync-uploads/sync-icons. 



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