Common Issues & Solutions
Quick fixes for frequently encountered problems
Apple Health Export Issues
Cannot find "Export All Health Data" option
Cause: Older iOS version or restricted Health app access.
Solution:
- Update iOS to 14.0 or later
- Open Health app → Profile (top-right) → Scroll to bottom
- If still missing, check Screen Time restrictions: Settings → Screen Time → Content & Privacy Restrictions → Allowed Apps → Ensure Health is enabled
Export stuck at "Preparing..." for too long
Cause: Large dataset (5+ years of data) or low storage/battery.
Solution:
- Wait patiently (may take 3-10 minutes for large datasets)
- Ensure iPhone has >30% battery
- Close all background apps
- Restart Health app and try again
- Free up storage (export requires temporary space)
Export file is extremely large (>100 MB)
Cause: Many years of accumulated data or high-frequency measurements.
Solution:
- GLYVIA supports files up to 500 MB
- Use Files app to transfer via USB to Windows PC
- Use iCloud for Windows to sync Files automatically
- Compression reduces size automatically in .zip format
Export file shows as 0 KB or corrupted
Cause: Export interrupted or device storage full.
Solution:
- Delete corrupted export.zip file
- Free up at least 200 MB storage
- Restart iPhone
- Export again, ensuring process completes fully
Data Import Problems
Error: "Invalid file format"
Cause: File is not a valid Apple Health export.
Solution:
- Ensure you selected export.zip file (not export.xml)
- Do not unzip the file before importing
- Verify file came from Apple Health app (not third-party apps)
- Re-export if file appears corrupted
Import process freezes at 50%
Cause: Large dataset overwhelming system resources.
Solution:
- Close other running applications
- Allow 5-10 minutes for processing (do not force-quit)
- Check Task Manager: GLYVIA.exe should show CPU activity
- If truly frozen (no CPU activity for 5 minutes), restart GLYVIA and retry
Warning: "No glucose data found"
Cause: Apple Health export contains no blood glucose measurements.
Solution:
- This is normal if you haven't tracked glucose
- GLYVIA will analyze other available metrics (heart rate, activity, etc.)
- To track glucose: Use compatible devices (CGM) or manually log readings in Health app
Import succeeded but reports show "Insufficient data"
Cause: Not enough data points for meaningful analysis.
Solution:
- Most analyses require at least 7-14 days of data
- Continue tracking health metrics in Apple Health
- Re-export and import after accumulating more data
License & Activation Issues
License key not accepted (Invalid Key error)
Cause: Typo, extra spaces, or wrong key format.
Solution:
- Copy entire key from email (including dashes): GLYV-XXXX-XXXX-XXXX-XXXX
- Paste directly (avoid typing manually)
- Remove any extra spaces before/after key
- Check for O vs 0, I vs 1 confusion
- If still invalid, request key resend: support@glyvia.com
Activation fails: "Server connection error"
Cause: Firewall/network blocking activation.
Solution:
- Check internet connection
- Temporarily disable VPN
- Allow GLYVIA.exe through Windows Firewall
- Use offline activation method (see Activation Guide)
"License already activated on another device"
Cause: Device-bound license already in use.
Solution:
- Each license works on 1 device only
- If you upgraded hardware: Contact support for device transfer
- If you need multiple devices: Purchase additional licenses
- Transfers allowed once per year with proof of purchase
Free version shows "Report limit reached"
Cause: Free version allows 1 complete report.
Solution:
- This is expected behavior (not an error)
- Free version includes: 1 clinical report + unlimited glucose dashboard
- Purchase license to unlock unlimited reports
Performance Issues
GLYVIA runs very slowly
Cause: System below minimum requirements or too many background processes.
Solution:
- Close unnecessary applications
- Ensure 4+ GB RAM available (check Task Manager)
- Update graphics drivers
- Restart computer to clear memory
- Check system requirements: Compatibility
Report generation takes too long (>5 minutes)
Cause: Extremely large dataset (5+ years with minute-level tracking).
Solution:
- Allow process to complete (may take up to 10 minutes for huge datasets)
- Upgrade RAM to 8+ GB for better performance
- This is a one-time import; subsequent reports are instant
Application crashes during analysis
Cause: Memory exhaustion or corrupted data.
Solution:
- Restart GLYVIA
- Re-export Apple Health data (may fix corruption)
- Ensure sufficient RAM (4GB minimum, 8GB recommended)
- Enable crash reporting in Settings to help us investigate
- Contact support with crash log: support@glyvia.com
Display & Visualization Issues
Reports show garbled text or missing characters
Cause: Font rendering issue.
Solution:
- Update Windows to latest version
- Settings → Display → Change scale to 100% temporarily
- Restart GLYVIA after changing display settings
Charts not displaying correctly (blank or overlapping)
Cause: Graphics driver issue or high DPI scaling.
Solution:
- Update graphics drivers from manufacturer website
- Right-click GLYVIA.exe → Properties → Compatibility → Override high DPI scaling
- Ensure display resolution is at least 1280x720
Colors appear washed out or incorrect
Cause: Monitor color profile or HDR settings.
Solution:
- Disable HDR if enabled: Settings → System → Display → HDR
- Adjust monitor color settings to sRGB profile
Data Accuracy Concerns
Report shows unexpected values or trends
Possible Causes:
- Sensor errors: Wearable devices may record incorrect data
- Manual entry mistakes: Check for typos in Health app
- Unit conversion: Verify metric/imperial unit consistency
- Time zone changes: Travel may affect timestamp accuracy
Solution:
- Review source data in Apple Health app
- Delete erroneous entries in Health app
- Re-export and re-import to GLYVIA
- Remember: GLYVIA analyzes data as-is; errors in Apple Health appear in reports
Missing data periods in reports
Cause: Apple Health had no recorded data for those periods.
Solution:
- Check if Apple Watch or tracking devices were not worn
- Verify Health app permissions (Settings → Privacy → Health)
- Some apps may not sync data retroactively
Windows-Specific Issues
Antivirus blocks installation or flags GLYVIA as malware
Cause: False positive from overly aggressive antivirus.
Solution:
- GLYVIA is digitally signed and safe
- Add exception in antivirus software
- Temporarily disable real-time protection during installation
- Download from official website only
Installation fails: "Administrator privileges required"
Cause: Windows User Account Control (UAC) restriction.
Solution:
- Right-click GLYVIA-Setup.exe
- Select "Run as administrator"
- If on work/school computer, contact IT admin
Error: "MSVCP140.dll is missing"
Cause: Microsoft Visual C++ Redistributable not installed.
Solution:
- Download: Visual C++ Redistributable (64-bit)
- Install the package
- Restart computer
- Run GLYVIA again
Need More Help?
If your issue is not listed here:
- Browse Full Documentation: Knowledge Base
- Contact Support: Submit Support Request
- Email: support@glyvia.com
- Windows version (Settings → System → About)
- GLYVIA version (Help → About)
- Description of issue with screenshots
- Steps to reproduce the problem