Skip to content

Fixing upload issues with Microsoft Office Upload Center.

Robert Greiner
Robert Greiner
1 min read
Sorry we couldn't open <FileName>.pptx

My preferred way to work with Microsoft Office and SharePoint is to map a network drive to my client's SharePoint site and treat the files as if they were on my local drive. Microsoft actually does a solid job syncing the files and simultaneous collaboration with my co-workers is seamless. I'm happy when I can edit files as the same time as my team and every time I save my document gets backed up on the server and I automatically get the latest updates.

Recently, I ran into an issue with SharePoint where my saved changes in PowerPoint were not getting automatically uploaded to the server. Either PowerPoint would go in "offline mode" or the application would just stop responding. When I examined the Microsoft Office Upload Center (or Document Cache, depending on which version of Office/Windows you are running), I noticed that all of my local changes were "pending" upload.

After doing a few hours of digging, I finally figured out what the problem was. My antivirus application - ESET Smart Security 8 - was blocking the Microsoft Office Upload Center from connecting to my client's SharePoint site. To resolve this issue, I simply disabled protocol filtering for PowerPoint and Microsoft Office Upload Center. The steps below should work for you regardless of which version of MS Office and ESET you are running.

Antivirus configuration settings - ESET Smart Security
  1. Open the ESET GUI
  2. Click "Settings"
  3. Click "Advanced Settings"
  4. Search for "Protocol Filtering" (under "Web and Email")
  5. Click "Excluded Applications"
  6. Check "MSOSYNC.exe" - I also checked PowerPoint for good measure.
  7. Save, close, and everything should be working

If you are having this same issue, I understand your frustration. This was a horrible problem to deal with and I'm glad it's behind me. Hopefully this helps.

Please consider subscribing, it's free.

Robert Greiner Twitter

Professional optimist. I write a weekly newsletter for humans at the intersection of business, technology, leadership, and career growth.

Related Posts

Members Public

Artist for a Day

The future of creative output is multiplied by AI.

Artist for a Day
Members Public

The Auto Industry's Cloud Awakening

Auto manufacturers are behind the cloud adoption curve but are well-positioned to unlock the future of mobility by building foundational capabilities across six key areas.

The Auto Industry's Cloud Awakening
Members Public

Off Topic Thursday: Apple Keynote Event Reflections

Igor and Robert nerd out on the recent Apple Keynote Event from October 13th 2020 and share their reflections about exceptional production value, new products, and Apple’s evolution as an organization.