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Error 3050 problem opening the Quantum Project Manager
(Last updated 2/12/2022)

If you get a message when opening the program "Error when linking table in QPMLinkTable", followed by "Could not lock file" and "The following error has occurred: 3050  With the following description: Could not lock file.", see below.

Microsoft released some security updates in December 2021 that caused this. It should now be fixed by just applying all the available Windows updates. If that does not work, try installing the Windows updates below:

Click here to download and install the KB2965317 update to fix the error 3050 problem described above

Click here to download and install the KB5002151 update if you still have the error 3050 problem described above

Call technical support at 610-373-4835 or email us at support@quantumss.com if you need assistance.

 

The above should fix this problem. Continue below for more details on this whole debacle.

Microsoft released an update on 12/14/21 that caused error 3050 when opening the Quantum Project Manager program. The update that caused the problem is "Security Update for Microsoft Office 2013 (KB5002104)". Click here for more information.

Microsoft released an update on 12/29/21 that fixes the error 3050 when opening the Quantum Project Manager program. The update that fixes the problem is "Update for Microsoft Office 2013 (KB2965317)". Click here for more information.

Click here to download and install the KB2965317 update to fix the problem described above

If the above does not work to resolve the problem, continue below.

Microsoft released another update on 1/11/22 that reintroduced the error 3050 in certain cases when opening the Quantum Project Manager program. The update that caused this problem is "Security Update for Microsoft Office 2013 (KB5002124)". Click here for more information. This update fixes a remote code execution vulnerability issue for standard UNC network paths and long file names. However, if the network paths include DFS namespaces, short file names, or mapped drives, you can get the error 3050 problem. If you do, Microsoft recommends that you install another update KB5002151 released on 2/1/2022. Click here for more information on KB5002151.

Click here to download and install the KB5002151 update if needed to fix the problem described above

You should not have to do any of the steps below. KB2965317 and/or KB5002151 should fix the problem. The following steps are provided only for completeness and as a last resort.

DO NOT DO THE STEPS BELOW IF YOU ARE NOT HAVING THIS PROBLEM OR IF INSTALLING THE UPDATE ABOVE RESOLVES THE PROBLEM.

The KB5002104 and/or KB5002124 update can be removed to resolve the problem by using the instructions below.

To remove the Microsoft fix that caused the problem (only do if above does not work):
1. Close out of the Quantum Project Manager program or any error messages.
2. Open the Windows Control Panel.
3. Click on Programs and Features, then click “View Installed Updates”.
4. Go to the section titled “Microsoft Access Runtime 2013” or “Microsoft Office 2013”.
5. Find the entry for “Security Update for Microsoft Office 2013 (KB5002104)” (or KB5002124) and click it to highlight that entry.
6. Click on the Uninstall button at the top of the page to remove this update (or right click the entry and click uninstall).
7. Open the Quantum Project Manager program. It should open successfully now.
8. If you are using any kind of managed services, add KB5002104 and/or KB5002124 to the list of updates to not install. Or you can temporarily pause your Windows or Office updates to make sure this update does not get reinstalled. Then when there is a permanent fix, you can resume the normal updates. Check this page for the latest information on this situation.

To temporarily pause Windows Updates (if needed):
1. Click the Windows Start button, then click Settings.
2. Click Update & Security, then click "Windows Update".
3. Scroll down and click "Pause Updates for 7 Days".

Call technical support at 610-373-4835 or email us at support@quantumss.com if you need assistance.

 
Last modified: February 12, 2022