A professional diagramming tool that helps users visualize complex information through easy-to-understand diagrams.
To better assist you, could you please let me know if your Visio license assignment has changed recently, or if you have signed in with a different account than usual?
From your description, I understand that the built-in Repair Now feature has not resolved the issue with Microsoft Visio and instead causes the application to close unexpectedly when the repair process is initiated.
You could try to follow these steps to troubleshoot it:
Perform a Manual Online Repair
Since the standard repair option was unsuccessful, I recommend running a full Online Repair to verify and replace any corrupted installation files.
Open Start > Settings > Apps > Installed Apps, locate your Microsoft Visio (or your Microsoft 365 installation), select the three-dot menu, and choose Modify. Select Online Repair, then click Repair. Please note that this process requires a stable internet connection and may take several minutes to complete.
You can refer via: Repair an Office application
Launch Visio in Safe Mode
If the issue persists, it may be caused by a conflicting add-in. To isolate the issue, press Windows + R to open the Run dialog box, input visio /safe (please notice the space) and press Enter. If Visio launches successfully in Safe Mode, navigate to File > Options > Add-ins and disable any third-party add-ins that may be contributing to the instability. This will help determine whether an add-in is causing the application to crash or behave unexpectedly.
Reset Visio User Profile Settings
Corrupted user settings can sometimes cause startup failures. Close Visio, then press Windows + R, type regedit, and press Enter. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Visio. Rename the Visio key, for example to Visio_old, and then reopen Visio. This will force the application to recreate a fresh set of user settings.
Update Microsoft Office
Some Visio issues may be related to a specific Office build. To ensure you are running the latest version, open any Office application such as Word or Excel, go to File > Account, and under Office Updates, select Update Options > Update Now.
Note: Although these repair procedures are designed to preserve your data, I recommend backing up or synchronizing all .vsdx files to a cloud service or local storage before proceeding.
I hope that these steps will restore full functionality to your Visio application. Please do not hesitate to reach out if further assistance is required.