> For the complete documentation index, see [llms.txt](https://raia-software-inc.gitbook.io/tacview/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://raia-software-inc.gitbook.io/tacview/faq/technical-issues-faq-2.md). # Technical Issues FAQ πŸ“Œ **Tacview freezes, hangs or crashes.** First, please make sure that your system meets the [minimum system requirements](https://tacview.net/product/requirements/) and that your graphics card drivers are up to date. Ensure that Tacview is running on your dedicated graphics card. Check the [Tacview log](#tacview-log) to be sure. ``` 2026-04-27T12:05:25.745Z NFO OpenGL vendor: NVIDIA Corporation 2026-04-27T12:05:25.745Z NFO OpenGL renderer: NVIDIA GeForce RTX 3060/PCIe/SSE2 2026-04-27T12:05:25.745Z NFO OpenGL version: 4.6.0 NVIDIA 591.86 ``` If necessary, force Tacview to run on the dedicated graphics card using your GPU vendor’s configuration tools. If the issue persists, try deleting the following registry key, then restarting Tacview: `HKEY_CURRENT_USER\Software\Raia Software Inc.` If that doesn't resolve the issue, be advised that there are several programs which are known to inject invalid instructions during Tacview 3D rendering phase. This can cause crashes or freeze. If you uninstall/disable the following programs and services, this should fix the issue: * Nahimic OSD service may be stuck in an infinite loop during OpenGL rendering, freezing Tacview at startup on secondary monitor in some cases. * Dxtory program is corrupting the RSI register, crashing Tacview at startup. Finally, ensure that your monitor is plugged into your dedicated graphics card ("Video Card Graphics Outputs" in the below image) and not into the motherboard ("Onboard Graphics Outputs in the below image). ![FAQ - Display Outputs](/files/VdzUMbLr8X9tbBnQcyOk) If you are still experiencing the freeze, hang or crash please send your [Tacview log](#tacview-log), [Dxdiag](#dxdiag), and [crash dump](#crash-dump), if applicable, to [Tacview Support](mailto:support@tacview.net?subject=Technical%20Issue). Please describe what you were doing when the crash ocurred, and also share any flight recording file you were using during the freeze/hang/crash. #### Tacview Log The last 10 logs of Tacview are saved in your `%TEMP%/Tacview/` folder. Paste that path into Windows Explorer to find the folder. Make sure you are sending a log of a flight where the issue occurred. ![FAQ - %Temp%/Tacview/](/files/eLeApP1uIDiUvCi168ob) #### Dxdiag Use this tool to generate a text report file which has detailed information about your computer's graphics, sound, and other devices. * From the Windows desktop, press the `Windows` and `R` keys to open the `Run` window. * In the `Open:` field of the `Run` window, type `dxdiag`. Click `OK` to open the DirectX\* Diagnostic Tool. If prompted to check if your drivers are digitally signed, click Yes. * In the DirectX\* Diagnostic Tool window, choose `Save All Information`. * In the `Save As` window, the DirectX\* information is saved as a text file. Choose the Desktop or another easily accessible location to save your file, and then click Save. Reference: [Intel Website](https://www.intel.ca/content/www/ca/en/support/articles/000022556/graphics.html) #### Crash Dump Tacview generates a crash dump when it crashes. Please check the popup for the path to the crash dump file `XtraLib-CrashReport.dmp`. ![FAQ - Crash Dump](/files/ZWxIxUdapu1Mh0hIPp7s) Sometimes if Tacview is hanging / freezing, no crash dump is created. In that case you can generate a minidump like this: ***Method 1 for generating a crash dump*** Download the Microsoft program [Process Explorer](https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer) When Tacview is in a hang / freeze, open Process Explorer (procexp.exe), right click on Tacview and select `Create Dump` -> `Create Minidump`. Send the `DMP` file to us and we should be able to know for sure exactly what the problem is. ![FAQ - Process Explorer](/files/jpEcdfm8ssPylBde6eOb) If you get this error: ![FAQ - Minidump Error](/files/vhGmWhYD3sNzyEe2IFIC) it may be because you are running Tacview as administrator, which is never necessary. Close everything and run Tacview as a standard user, and in the case of a hang, repeat the steps above. ***Method 2 for generating a crash dump*** While Tacview is in a hang/freeze, press `CTRL`+`SHIFT`+`ESC` to open `Task Manager`, right-click on Tacview and select `Create dump file`. ![FAQ - Task Manager](/files/M0ZTHos13PJ0JsvtGOe7) ***Method 3 for generating a crash dump*** Configure Windows to create crash dumps in all cases. See the [Microsoft Documentation](https://learn.microsoft.com/en-us/windows/win32/wer/collecting-user-mode-dumps) πŸ“Œ **My playback control bar has disappeared.** First, verify that `Playback Control Bar` is enabled in the `Analysis` menu. ![FAQ - Playback Control Bar](/files/IkZq39uSIGmLI6KVyDIf) If that doesn't fix it, delete the following registry key and restart Tacview. This will reset the positions of all windows. `HKEY_CURRENT_USER\Software\Raia Software Inc.\Tacview\Local\Windows\` πŸ“Œ **My flight recordings are taking too much disk space. What can I do?** In many cases, opening any flight recording within Tacview and then saving them theough the `File` β†’ `Save` menu option as a `.zip.acmi` file will reduce their size significantly, especially when the original data was not stored in an optimal format. For batch processing, you can use the following command line example: ``` Tacview.exe -Open:"Tacview-20150512-191044-DCS.txt.acmi" -Save -Quiet -Quit ``` If you are working with Falcon 4.0 VHS files, do not forget to specify the proper theater before opening the corresponding VHS file: ``` Tacview.exe -Falcon4Theater:"Korea" -Open:"TAPE0004.vhs" -Save -Quiet -Quit ``` πŸ“Œ **Steam asks me for admin rights every time I launch Tacview.** Tacview only needs administrator privileges one time after each update, in order to update the export scripts for simulators installed on the computer. If Tacview asks for administrator privileges more often, check `Steam\logs\installscript_log.txt` . If Tacview is failing to create and/or access the file `Tacview\runasadmin.vdf`, it could be that the admin you are using does not have access to that folder. Check the security properties of all folders leading to Tacview and correct the rights as necessary. πŸ“Œ **3D objects are showing in Tacview as wireframes** [Wireframe](https://github.com/RaiaSoftwareInc/tacview.documentation/blob/main/faq/images/wireframe.webp) First, try updating your drivers. If that doesn't resolve the issue, try a clean reinstall from scratch of your nVidia drivers & GeForce Experience, and/or your Intel drivers & Intel Graphics Command Center, as applicable, resetting all settings to default. πŸ“Œ **"MF.dll Not Found"** Users of Windows N may see the following error message when trying to install and/or run Tacview. ``` The code execution cannot proceed because MF.dll was not found. Reinstalling the program may fix this problem. ``` This may mean that the Media Feature Packs needs to be installed: `Start` β†’ `Settings` β†’ `Apps` β†’ `Apps & features` β†’ `Optional features` β†’ `Add a feature` β†’ `Media Feature Pack` The computer may need to be rebooted after. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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