Tip #267: If form load is slow, take this pill

Gayan “Not Daddy” Perera is a man of few words when it comes to squeezing the last bit of performance out of on-premise installations. Succulent and straight to the point:

If you’re running CRM 2013 on-premise using IIS 8, make sure to go into the IIS Manager > Configuration Editor then select system.web\caching\outputCaching, set omitVaryStar to True and click Apply.
IIS 8 performance settings
This will ensure that the CRM web resources are cached correctly. When this setting is set to False you’ll notice slow form loads.

6 thoughts on “Tip #267: If form load is slow, take this pill

  1. Paul Way says:

    This is an oldie but a goodie! Also applies to CRM 2011 and usually speeds up forms by a solid second or two.

  2. […] faldt over følgende artikel, som beskriver hvordan man kan optimere indlæsningen af formularer i en lokalt installeret […]

  3. […] 1.) If this is onPrem, try setting omitVaryStar to true -> crmtipoftheday.com/…/if-form-load-is-slow-take-this-pill […]

  4. […] in IIS 8 / 8.5. After you’ve done that, check the outputCache setting for omitVaryStar as per this CRM Tip of the Day. Yes it applies to IIS 8.5 as well, and it’s not just a CRM issue – it affects all sites hosted […]

  5. Gaurav says:

    This help me to improve performance.


  6. Peter Lynch says:

    After upgrading always check omitVaryStar setting. I have found upgrades can often set omitVarStar back to the default causing very slow form opening

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