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[GH-ISSUE #81] Outlook 2016 TimeoutException #977

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opened 2026-03-13 23:39:59 +03:00 by kerem · 8 comments

kerem commented

2026-03-13 23:39:59 +03:00

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Originally created by @vascowhite on GitHub (Nov 17, 2015).
Original GitHub issue: https://github.com/aluxnimm/outlookcaldavsynchronizer/issues/81

Your synchroniser has been running flawlessly since I started using it. I upgraded to version 1.5.3 on the 14th November 2015 and it continued to work fine until this morning (17th November 2015) when I received the following errror

Clicking the Details button gives the following text:-

Name:
From: file:///C:/Program Files (x86)/Gerhard >Zehetbauer/CalDavSynchronizer/CalDavSynchronizer.vsto

************** Exception Text **************
System.TimeoutException: The deployment manifest could not be downloaded because a connection >to the network could not be established. Ensure that you can connect to the network, and try again.
at >Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.GetManifests(TimeSpan timeout)
at >Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.InstallAddIn()

This prevents Outlook from loading any further plugins and prevents it from starting up.

I do have a network connection. Any suggestions?

Originally created by @vascowhite on GitHub (Nov 17, 2015). Original GitHub issue: https://github.com/aluxnimm/outlookcaldavsynchronizer/issues/81 Your synchroniser has been running flawlessly since I started using it. I upgraded to version 1.5.3 on the 14th November 2015 and it continued to work fine until this morning (17th November 2015) when I received the following errror ![caldavsyncerror](https://cloud.githubusercontent.com/assets/874109/11205591/2c0f2838-8d09-11e5-9256-e2469eaa7eef.png) Clicking the `Details` button gives the following text:- > Name: > From: file:///C:/Program Files (x86)/Gerhard >Zehetbauer/CalDavSynchronizer/CalDavSynchronizer.vsto > > *************\* Exception Text ************** > System.TimeoutException: The deployment manifest could not be downloaded because a connection >to the network could not be established. Ensure that you can connect to the network, and try again. > at >Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.GetManifests(TimeSpan timeout) > at >Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.InstallAddIn() This prevents Outlook from loading any further plugins and prevents it from starting up. I do have a network connection. Any suggestions?

kerem closed this issue

2026-03-13 23:40:04 +03:00

kerem commented

2026-03-13 23:40:10 +03:00

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@aluxnimm commented on GitHub (Nov 17, 2015):

No firewall or proxy issues on the network? Maybe try to manually uninstall and reinstall the plugin.

@aluxnimm commented on GitHub (Nov 17, 2015): No firewall or proxy issues on the network? Maybe try to manually uninstall and reinstall the plugin.

kerem commented

2026-03-13 23:40:15 +03:00

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@vascowhite commented on GitHub (Nov 17, 2015):

No, there are no firewall/proxy issues and I have uninstalled/re-installed several times this morning.
As I say, it worked fine since Saturday and suddenly failed today.
I'm not sure what network it is referring to. Is this .net trying to contact our Exchange server?

@vascowhite commented on GitHub (Nov 17, 2015): No, there are no firewall/proxy issues and I have uninstalled/re-installed several times this morning. As I say, it worked fine since Saturday and suddenly failed today. I'm not sure what network it is referring to. Is this .net trying to contact our Exchange server?

kerem commented

2026-03-13 23:40:20 +03:00

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@vascowhite commented on GitHub (Nov 17, 2015):

I tried it with my AV switched off and still the same problem.
I am using Outlook 2016 on Windows 7 Pro 64 bit.

@vascowhite commented on GitHub (Nov 17, 2015): I tried it with my AV switched off and still the same problem. I am using Outlook 2016 on Windows 7 Pro 64 bit.

kerem commented

2026-03-13 23:40:25 +03:00

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@aluxnimm commented on GitHub (Nov 17, 2015):

So the question is, what changed suddenly since our plugin is the same obviously. Any Windows Updates regarding .net or vsto runtime or Office?

@aluxnimm commented on GitHub (Nov 17, 2015): So the question is, what changed suddenly since our plugin is the same obviously. Any Windows Updates regarding .net or vsto runtime or Office?

kerem commented

2026-03-13 23:40:31 +03:00

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@vascowhite commented on GitHub (Nov 17, 2015):

Exactly.

The last update logged is 12th November which pre-dates the installation of 1.5.3. Nothing on our network has changed, which makes this quite a mystery.

Where will the deployment manifest referenced in the error message be stored? Is that part of your plugin?

@vascowhite commented on GitHub (Nov 17, 2015): Exactly. The last update logged is 12th November which pre-dates the installation of 1.5.3. Nothing on our network has changed, which makes this quite a mystery. Where will the deployment manifest referenced in the error message be stored? Is that part of your plugin?

kerem commented

2026-03-13 23:40:36 +03:00

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@aluxnimm commented on GitHub (Nov 17, 2015):

You can try to clear the ClickOnce Cache

http://stackoverflow.com/questions/2418542/clear-the-net-downloaded-application-cache-without-mage

rundll32 dfshim CleanOnlineAppCache

@aluxnimm commented on GitHub (Nov 17, 2015): You can try to clear the ClickOnce Cache http://stackoverflow.com/questions/2418542/clear-the-net-downloaded-application-cache-without-mage rundll32 dfshim CleanOnlineAppCache

kerem commented

2026-03-13 23:40:41 +03:00

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@vascowhite commented on GitHub (Nov 17, 2015):

That seems to have sorted it. I did the following:-

Un-install caldavsynchronizer
Run rundll32 dfshim CleanOnlineAppCache
reboot
re-install caldavsynchronizer

Thanks for the help, I probably wouldn't have found that SO question as I wouldn't have made the connection between that and my issue.

@vascowhite commented on GitHub (Nov 17, 2015): That seems to have sorted it. I did the following:- - Un-install caldavsynchronizer - Run rundll32 dfshim CleanOnlineAppCache - reboot - re-install caldavsynchronizer Thanks for the help, I probably wouldn't have found that SO question as I wouldn't have made the connection between that and my issue.

kerem commented

2026-03-13 23:40:46 +03:00

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@aluxnimm commented on GitHub (Nov 17, 2015):

Good news, at least we have a solution for such problems now!

@aluxnimm commented on GitHub (Nov 17, 2015): Good news, at least we have a solution for such problems now!