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Paul Woolcock edited this page May 8, 2021 · 14 revisions
FAQs > Known Issues

Why Won't OGCS Upgrade? I Know There's a Later Version Released!

If you are running a version of OGCS prior to v2.7.4.0, unfortunately GitHub made a change that broke the upgrade mechanism. You will need to manually download at least v2.7.4 for the upgrade process to work again.

"Page cannot be displayed" After Authorising OGCS To Access My Calendar

This may happen if you have Google Chrome as your default browser and have previously accessed a website on https://localhost - something web developers or people in IT may do. To resolve this, there are several options available:

  • Change the start of the URL from https:// to http://
  • Perform a hard refresh by pressing
    • Ctrl+F5, or
    • F12 and then right-click the refresh button and Hard Reload or Empty Cache and Hard Reload
  • At the start of the authorisation process, copy the URL out to
    • an Incognito Chrome window (Ctrl+Shift+N)
    • a different browser

Usage Limits Exceeded

Although Google do impose usage limits, there appears to be a bug related to events with multiple recipients with different email address domains. Therefore, if you are continually hitting this problem, try unchecking the sync attendees option.

Unable to add new entries into the Google Calendar. The following error occurred:
Google.Apis.Requests.RequestError
Calendar usage limits exceeded. [403](403)
Errors [
Message[Calendar usage limits exceeded.](Calendar-usage-limits-exceeded.) Location[ - ](---)  
Reason[quotaExceeded](quotaExceeded) Domain[usageLimits](usageLimits)

Anti-Virus False Positives

🌟 As of v2.7.3 OGCS executable files are now code-signed which, over time,
will help anti-virus software to trust it and thus render the following information obsolete 🌟

Some AV software may falsely report OGCS as a virus. This is likely due to OGCS accessing the Outlook address book to determine the email address of meeting attendees, which is required in order to sync them.

This being a spare-time project, there's no way I can submit every release of OGCS to every over-zealous AV vendor - support from the user community in doing so would be greatly appreciated 👍

False positive reporting links for some well known AV vendors:-

Windows Defender SmartScreen Protected Your PC

This is normally the Windows 10 Edge browser marking files that are downloaded from the internet (especially executable files) as blocked by default. To unblock your OGCS download:

  1. For Setup.exe right-click the file and select Properties
  2. In the bottom right hand corner, click the Unblock button.
  3. Execute Setup.exe

If you are wanting to use the portable zip release, either double-click the Windows Defender SmartScreen Unblock.ps1 file or follow these steps manually:

  1. Winkey+R and type powershell
  2. Change directory to the extracted files cd C:\my\extracted\files\directory
  3. Get-ChildItem | Unblock-File
  4. Now run OGCS by double clicking the executable.

Old Events Not Observing Daylight Saving

As per Issue 239, it appears Outlook may not recalculate the new time properly. In this case, you need to re-open the problematic appointment(s), change the start time, change it back and then save it.

Outlook Spam/Junk Mail Interference

As per Issue #1072, holding a programmatic connection open with Outlook appears to interfere with its spam mechanism and the notification messages that display above suspect messages. To workaround this, a hidden option is available with OGCS, forcing it to disconnect from Outlook inbetween syncs:

  1. Go to the About tab and double click on the path for "Config In" - this will open Windows Explorer
  2. Close OGCS
  3. In the Explorer window, find your settings.xml file and open in an editor
  4. Find the DisconnectOutlookBetweenSync line and change the value from false to true
  5. Save and start OGCS

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