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Dear sgurule,
Since the files opened last week and your coworkers can still open the same files, the drawings themselves are probably not damaged. The issue is more likely specific to your Visio installation, user profile, add-in, update, graphics configuration, or local copy. Could you confirm:
- What is the complete wording of the error message?
- Can Visio open by itself and create a new blank drawing?
- Does the error affect every Visio file or only certain files?
- Are the files stored locally, in OneDrive, SharePoint, or on a network drive?
- Which Visio edition, version, build, and bitness are installed? Check File > Account > About Visio.
- Did Visio or Windows install an update shortly before the problem began?
- Does Repair Now appear in the error dialog, and what happens if you select it?
In the meantime, here are a few things to try:
- Copy one affected .vsdx file to your local Desktop and open it from there. This rules out OneDrive, SharePoint, network path or sync problems.
- Start Visio in Safe Mode. Press Windows + R, enter visio /safe, then select OK and open the local copy. Safe Mode disables add ins and customisations. If the file opens, go to File > Options > Add-ins, disable the third party COM add ins, then restart Visio normally.
- Run an Online Repair. This is different from the reinstall you already tried, because it re downloads and replaces every core file while leaving your settings intact. Right click Start > Installed apps > Microsoft 365 (or Office) > Modify > Online Repair.
If none of that helps, testing with a new Windows user profile will confirm whether the fault is tied to your profile.
I hope this helps. Looking forward to your reply.
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