MS Office 2010: Excel Run Extremely Slow when Opening
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To fix lagging issues on MS Office Applications (Excel, Word):
If the steps above does not work, you may go to https://support.microsoft.com/en-us/help/833041/an-office-program-is-slow-or-may-appear-to-stop-responding-hang-when-yto click on the Microsoft Fix It button to have the issue solved automatically.Â
To fix slow Microsoft office applications, try the following approaches:
"HKEY_CURRENT_USERSoftwareMicrosoftOffice14.0ExcelOptions"
Look for a WORD value labeled DisableRobustifiedUNC set to a value of 1. If this is set on your machine, it's recommended you delete this value or set the DWORD value to 0.
If the performance is still unsatisfactory, you could the following workarounds: