# List of FAQs organised by topic

**URL:** <https://resource.dopus.com/t/list-of-faqs-organised-by-topic/3079>\
**Category:** Opus FAQs\
**Created:** [February 5, 2024, 3:00pm UTC](https://resource.dopus.com/t/list-of-faqs-organised-by-topic/3079 "2024-02-05T15:00:00Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![Leo](https://resource.dopus.com/user_avatar/resource.dopus.com/leo/32/69732_2.png) [@Leo](https://resource.dopus.com/u/Leo)\
**Post date:** [February 5, 2024, 3:00pm UTC](https://resource.dopus.com/t/list-of-faqs-organised-by-topic/3079/1 "2024-02-05T15:00:00Z")

</div>

## Directory Opus FAQs organised by topic

This post contains a list of Opus FAQs organised by topic rather than by age as they are when you view the FAQ forum.

### Installation and Evaluation Period

- [Common purchasing, upgrading and licensing questions.](https://resource.dopus.com/t/common-purchasing-upgrading-and-licensing-questions/23553)
- [Upgrade subscriptions](https://resource.dopus.com/t/upgrade-subscriptions/58445)
- [How to get an extended 60-day evaluation.](https://resource.dopus.com/t/how-to-get-an-extended-60-day-evaluation/3474)
- [Windows Compatibility Settings / Wrong DPI / Installer misdetects OS](https://resource.dopus.com/t/windows-compatibility-settings-wrong-dpi-installer-misdetects-os/11352)
- [Your old toolbars are still there after you upgrade](https://resource.dopus.com/t/your-old-toolbars-are-still-there-after-you-upgrade/10812) -- How to turn them back on.
- [Where is the uninstaller?](https://resource.dopus.com/t/where-is-the-uninstaller/25283) -- In the usual place!
- [How to manually remove Explorer Replacement settings](https://resource.dopus.com/t/how-to-manually-remove-explorer-replacement-settings/3646)
- [Registration Certificate installation problems](https://resource.dopus.com/t/registration-certificate-installation-problems/1509)
- [How to check for a corrupted installer or main program](https://resource.dopus.com/t/how-to-check-for-a-corrupted-installer-or-main-program/8660)
- [How to change the language Opus uses](https://resource.dopus.com/t/how-to-change-the-language-opus-uses/9756)
- [Perform a silent (unattended) install of Directory Opus](https://resource.dopus.com/t/how-to-perform-silent-un-install-of-directory-opus/1319)

### File Open/Save dialogs

- [Can Opus replace the File Open/Save dialogs other programs use?](https://resource.dopus.com/t/can-opus-replace-the-file-open-save-dialogs-other-programs-use/36127)

### Folders, Formats, View Modes and Filters

- [Folder Formats: Quick Guide](https://resource.dopus.com/t/folder-formats-quick-guide/1313) -- Set the view mode, columns etc. used for all directories.
- [Folder Formats: Special Folders (Computer, Network, etc.)](https://resource.dopus.com/t/folder-formats-special-folders-computer-network-etc/1311)
- [Folder Formats: Detailed Guide](https://resource.dopus.com/t/folder-formats-detailed-guide/11718)
- [Startup Folders](https://resource.dopus.com/t/startup-folders/1738)
- [Date/Time column formats. Remove day names, “today”, “yesterday”, etc.](https://resource.dopus.com/t/date-time-column-formats-remove-day-names-today-yesterday-etc/31402)
- [Toggle display of Hidden / System files](https://resource.dopus.com/t/toggle-display-of-hidden-system-files/20549)
- [File Collections](https://resource.dopus.com/t/file-collections/2344)
- [Quickly open a Dual Display showing the current folder](https://resource.dopus.com/t/how-to-quickly-open-a-dual-display-showing-the-current-dir/1320)
- [Middle Double-Click to open Folder in New Tab (a bit like Firefox)](https://resource.dopus.com/t/middle-click-folder-to-open-in-new-folder-tab/3308)
- [Always re-use a single window instead of opening new windows](https://resource.dopus.com/t/always-re-use-a-single-window-instead-of-opening-new-windows/3579) -- New tabs instead of new windows. Also how to make a hotkey to show the last active window.
- [Calculate folder sizes automatically](https://resource.dopus.com/t/calculate-folder-sizes-automatically/2064) -- How to turn it on or off or do it only on-demand
- [How to filter items by location or sub-folder](https://resource.dopus.com/t/how-to-filter-items-by-location-or-sub-folder/7644) -- e.g. when searching for files.
- [Remember scroll positions and file selections](https://resource.dopus.com/t/how-to-remember-scroll-positions-and-file-selections/1297)
- [Why have all my files and folders turned purple/pink/red?](https://resource.dopus.com/t/why-have-all-my-files-and-folders-turned-pink-purple-red/31963)
- [Where has Power Mode gone?](https://resource.dopus.com/t/where-has-power-mode-gone/53744)

### Window Sizes and Positions

- [Why are my Opus windows on-top?](https://resource.dopus.com/t/why-are-my-opus-windows-on-top/2886)
- [Save the positions of the Tree, Find and Viewer panes](https://resource.dopus.com/t/how-to-save-the-positions-of-the-tree-find-and-viewer-panes/3567)
- [Windows don't maximize properly with (Matrox) multiple monitors](https://resource.dopus.com/t/doesnt-maximize-properly-with-matrox-multiple-monitors/1329)

### Renaming

- [Rename or move music files based on MP3 tags](https://resource.dopus.com/t/how-to-rename-or-move-music-files-based-on-mp3-tags/3056)
- The [Rename Presets](https://resource.dopus.com/c/rename) area has lots of examples of finished rename buttons, presets and scripts.

### Viewer and Viewer Plugins

- [Stop the Opus image viewer from being used by default](https://resource.dopus.com/t/how-to-stop-the-opus-image-viewer-from-being-used-by-default/1366)
- [Use the Opus image viewer inside or outside of Opus](https://resource.dopus.com/t/how-to-use-the-opus-image-viewer-inside-or-outside-of-opus/1326)
- [Enable/fix playback of various media formats in Opus](https://resource.dopus.com/t/how-to-enable-fix-playback-of-various-media-formats-in-opus/1974) -- Enable playback of MOV, MKV, FLV movies/videos, MP3 audio, etc.
- [View Open Office documents](https://www.pretentiousname.com/activex/index.html#openoffice) -- (viewing via MS Office should work automatically; OO may require an extra step)
- [View AutoCAD .DWG .DWF etc. files](https://www.pretentiousname.com/activex/index.html#autocad)
- [Viewer pane: Turn off auto-play for video and audio](https://resource.dopus.com/t/viewer-pane-turn-off-autoplay-for-video-and-audio/33976)

### Toolbar and Command Editing

- [How to use buttons and scripts from this forum](https://resource.dopus.com/t/how-to-use-buttons-and-scripts-from-this-forum/3546)
- [How to create a Styles tab-bar (like Opus 9)](https://resource.dopus.com/t/how-to-create-a-styles-tab-bar-like-opus-9/11999)
- [How to refer to programs on the same drive as portable Opus](https://resource.dopus.com/t/how-to-refer-to-programs-on-the-same-drive-as-portable-opus/7765)
- [Commands to copy selected filenames to the clipboard](https://resource.dopus.com/t/commands-to-copy-selected-filenames-to-the-clipboard/244)

_The [Buttons & Scripts](https://resource.dopus.com/c/buttons-scripts) area has lots of example buttons and scripts._

### Cosmetics

- [Understand and configure background images](https://resource.dopus.com/t/how-to-understand-and-configure-background-images/1327)
- [Change the color of the Name (or sorted) column](https://resource.dopus.com/t/change-the-color-of-the-name-or-sorted-column/7062)
- [Change the default folder icon in Opus](https://resource.dopus.com/t/change-the-default-folder-icon-in-opus/3797)

### Internet

- [When and why does Directory Opus access the Internet?](https://resource.dopus.com/t/when-and-why-does-directory-opus-access-the-internet/13835)
- [What is the Advanced FTP option?](https://resource.dopus.com/t/what-is-the-advanced-ftp-option/54205)
- [FTP doesn't work](https://resource.dopus.com/t/ftp-doesnt-work/1336)
- [Opus as the default FTP handler](https://resource.dopus.com/t/opus-as-the-default-ftp-handler/1426)
- [Opus displays an error referring to ws2\_32.dll](https://resource.dopus.com/t/directory-opus-displays-an-error-referring-to-ws2-32-dll/1316)
- [Empty drop-down list of addresses in Opus e-mail client](https://resource.dopus.com/t/drop-down-list-of-addresses-in-opus-email-client/2062)
- [SSH: How to login using key files](https://resource.dopus.com/t/ssh-how-to-log-in-using-key-files/5822)

### Other How-To Guides

- [How to backup or locate your Opus configuration (Simple)](https://resource.dopus.com/t/how-to-backup-or-locate-your-opus-configuration-simple/5465)
- [How to backup or locate your Opus configuration (Advanced)](https://resource.dopus.com/t/how-to-backup-or-locate-your-opus-configuration-advanced/8007)
- [Display full name or path in pop-up info-tips](https://resource.dopus.com/t/display-full-name-or-path-in-pop-up-info-tips/21406)
- [How to make Win-E open a default lister instead of Computer](https://resource.dopus.com/t/how-to-make-win-e-open-a-default-lister-instead-of-computer/15800)
- [How to move the thumbnail cache](https://resource.dopus.com/t/how-to-move-the-thumbnail-cache/9664)
- [Add Thumbnails to InfoTips](https://resource.dopus.com/t/how-to-add-thumbnails-to-infotips/3481)
- [Make RAR, 7z, ISO, etc. files open in Opus when double-clicked](https://resource.dopus.com/t/make-rar-7z-iso-etc-files-open-in-opus-on-double-click/1310)
- [Mouse Gestures](https://resource.dopus.com/t/how-to-use-mouse-gestures-with-opus/1920)
- [Always MOVE or COPY files after a drag & drop](https://resource.dopus.com/t/how-to-always-move-copy-files-on-a-drag-drop/1321)
- [Can I add a '..' item to go to the parent directory?](https://resource.dopus.com/t/can-i-add-a-item-to-go-to-the-parent-directory/1500)
- [How to add comments/descriptions to files and folders](https://resource.dopus.com/t/how-to-add-comments-descriptions-to-files-and-folders/7773)
- [How to Create New/Empty Files](https://resource.dopus.com/t/how-to-create-new-empty-files/3760)
- [How to Exit Directory Opus](https://resource.dopus.com/t/how-to-exit-directory-opus/3479)

### Other Troubleshooting

- [Why NOT to run Opus as Administrator under UAC](https://resource.dopus.com/t/why-not-to-run-opus-as-administrator-under-uac/9102)
- [Changes to folders are not always detected](https://resource.dopus.com/t/changes-to-folders-are-not-being-detected/1786)
- [Crash, exit or high CPU usage when viewing certain directories](https://resource.dopus.com/t/crash-exit-or-high-cpu-when-viewing-certain-directories/1325)
- [Crash, exit or high CPU usage when right-clicking certain files](https://resource.dopus.com/t/crash-exit-or-high-cpu-when-right-clicking-certain-files/1335)
- [How to find components causing high CPU usage](https://resource.dopus.com/t/how-to-find-components-causing-high-cpu-usage/14144)
- [How to find components causing memory leaks](https://resource.dopus.com/t/how-to-find-components-causing-memory-leaks/10135)
- [Finding which process has a file open](https://resource.dopus.com/t/finding-which-process-has-a-file-open/31188)
- [Process Monitor instructions](https://resource.dopus.com/t/process-monitor-instructions/27806)
- [Automatic crash logs (for bug reports)](https://resource.dopus.com/t/crash-dumps-for-bug-reports/8861)
- [Manually generating process snapshots](https://resource.dopus.com/t/manually-generating-process-snapshots/34071)
- [High CPU usage or other problems with AVI files](https://resource.dopus.com/t/opus-uses-100-cpu-problems-with-avi-files/1922)
- [Empty removable drives are not displayed](https://resource.dopus.com/t/empty-removable-drives-are-not-displayed/21226)
- [Thumbnail generation can be slowed by anti-virus software](https://resource.dopus.com/t/thumbnail-generation-can-be-slowed-by-anti-virus-software/1330)
- [Logitech Middle, Back or Forward buttons don't work](https://resource.dopus.com/t/how-to-make-logitech-mid-back-forward-buttons-work-in-opus/2972) -- Easily fixed by mouse configuration
- [Drag & Drop does not work for files or when customizing toolbars](https://resource.dopus.com/t/drag-drop-does-not-work-for-files-or-when-customizing-tool/1365)
- [Directory Opus executables and hooks](https://resource.dopus.com/t/directory-opus-executables-and-hooks/8486)
- [General slowdown or instability investigation steps](https://resource.dopus.com/t/general-slowdown-or-instability-investigation-steps/4618)
- [Problems caused by Windows Defender (strange behavior when using Opus)](https://resource.dopus.com/t/problems-caused-by-windows-defender-strange-behavior-when-using-opus/37173/1)

### Third-Party Software and Devices

- [MTP and transferring files with Android and iOS phones, cameras](https://resource.dopus.com/t/mtp-and-transferring-files-with-android-phones/28589)
- [Windows 10 Photos app: Why can’t I browse to the next image?](https://resource.dopus.com/t/why-cant-i-browse-to-the-next-image-in-the-windows-10-photos-app/28945)
- [Tortoise SVN/CVS or other icon overlays are not shown](https://resource.dopus.com/t/tortoise-cvs-svn-icon-overlays-dont-show/2702) -- Also fixes generic icons on network drives.
- [Autodesk Inventor thumbnails in Opus](https://resource.dopus.com/t/autodesk-inventor-thumbnails-in-opus/15521)
- [Shell extensions which are blocked by default](https://resource.dopus.com/t/shell-extensions-which-are-blocked-by-default/15350)
- [Conflicts with tools that move, on-top or modify other windows](https://resource.dopus.com/t/conflicts-with-tools-that-move-on-top-or-modify-other-windows/48661)
- [Can Opus verify file copies?](https://resource.dopus.com/t/can-opus-verify-file-copies/41032)

### Forum Etiquette, Terms and Conditions

- [Ask one question per thread](https://resource.dopus.com/t/ask-one-question-per-thread/5444)
- [Please do not use AI to create posts on this forum](https://resource.dopus.com/t/please-do-not-use-ai-to-create-posts-on-this-forum/54151)
- [Problems caused by unofficial patches](https://resource.dopus.com/t/problems-caused-by-unofficial-patches/2028)
- [Policy on UPX compressed EXEs and/or compiled AutoHotkey and AutoIt scripts](https://resource.dopus.com/t/policy-on-exes-made-by-upx-autohotkey-or-autoit/7429)

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_[View the full topic](https://resource.dopus.com/t/list-of-faqs-organised-by-topic/3079)._